FEATHERED SHOW-OFF OF THE CRETACEOUS: OVIRAPTOR

If ever there were a dinosaur that looked like it had dressed for a gala while everyone else showed up in sensible hiking boots, it was Oviraptor.

Picture yourself standing on the warm floodplains of Mongolia some 75 million years ago. The air shimmers with heat. 

Ferns rustle gently in the breeze. Somewhere nearby, insects hum while distant hadrosaurs grumble to one another. 

Then, stepping lightly between low shrubs, comes a creature unlike almost any other dinosaur.

About the size of a large turkey—though with considerably better posture—Oviraptor carries itself with quiet confidence. 

Its toothless beak gleams in the sunlight, its elegant neck curves gracefully, and atop its head rises a tall, bony crest that seems almost purpose-built for showing off. 

Draped across its body are feathers that catch the light with flashes of bronze, emerald, copper and midnight blue, colours that shift with every movement. 

Much like the iridescent plumage of today's magpies, starlings and peacocks, those shimmering feathers may have dazzled rivals and potential mates alike.

It is difficult not to smile looking at this wonderful oddball. Despite its fearsome name—Oviraptor means "egg thief"—it has spent more than a century trying to clear its reputation.

The first Oviraptor fossils were discovered in 1923 during the American Museum of Natural History's legendary Central Asiatic Expeditions to the Gobi Desert of Mongolia, led by the adventurous Roy Chapman Andrews. 

At the spectacular fossil beds of Bayn Dzak—the famous Flaming Cliffs—the expedition uncovered a partial skeleton lying beside a clutch of fossil eggs. It was a sensational find.

Henry Fairfield Osborn formally described the animal in 1924, naming it Oviraptor philoceratops—"egg thief, lover of ceratopsian eggs." 

We believed for many years that the dinosaur had been caught red-handed, stealing the eggs of Protoceratops. It made for a wonderfully dramatic story.

There was just one small problem. The story was wrong.

Decades later, beautifully preserved embryos discovered inside similar eggs revealed that they belonged not to Protoceratops, but to Oviraptor and its close relatives. 

Even more extraordinary were fossils of adults preserved sitting over their nests with their feathered forelimbs spread protectively around their eggs, as many modern birds do today. 

Rather than a notorious nest robber, Oviraptor appears to have been an exceptionally devoted parent that likely died defending its own young during a sudden sandstorm. While this all played out millions of years ago, it still pulls at my heartstrings. 

Talk about a public relations disaster. If dinosaurs had lawyers, Oviraptor would almost certainly have won its defamation case.

Those remarkable fossils revealed something else just as exciting. Adults carefully brooded their nests with feathered arms extended over the eggs, insulating them while allowing air to circulate. It is a strategy remarkably similar to that used by many birds today and a beautiful reminder that some of the most familiar behaviours in our backyards have roots deep in the Age of Dinosaurs.

Oviraptor belonged to a remarkable group of feathered theropods called oviraptorosaurs. These animals shared a common ancestor with the lineage that ultimately gave rise to modern birds. While Oviraptor itself was not a direct ancestor of living birds, it sits close to that evolutionary branch, preserving many features we now think of as unmistakably avian.

Its lightweight skeleton, hollow bones, wishbone (furcula), feathers, bird-like wrists and remarkable nesting behaviour all tell the story of dinosaurs becoming birds—not in one dramatic leap, but through millions upon millions of years of evolutionary refinement.

Its beak was another clever adaptation. Rather than relying on rows of sharp teeth, Oviraptor likely used its powerful jaws to crack open nuts, seeds, shellfish and other tough foods. It probably sampled the occasional egg when opportunity presented itself—as plenty of modern birds do—but certainly not often enough to deserve becoming prehistory's most infamous "egg thief."

And that magnificent crest? It was almost certainly less about battle than beauty.

Think of it as the Late Cretaceous equivalent of an extravagant hairstyle. Like the casque of a cassowary or the elaborate adornments of hornbills, the crest probably helped attract mates, establish dominance and identify individuals. Nature, it seems, has always had a flair for dramatic fashion.

Many of the behaviours we delight in watching among birds today—displaying, nesting, brooding, caring for young—were already well established while Tyrannosaurus still ruled the landscape.

Every new feathered dinosaur we uncover paints a picture of the Late Cretaceous as a landscape alive with colour, courtship displays, parental devotion and astonishing diversity. 

Flashing feathers shimmered in the sunlight. Elaborate dances played out across ancient floodplains. Tender parents guarded carefully tended nests while giant predators stalked the horizon.

Their descendants bring me joy each morning as I enjoy my first coffee of the day listening to their hoots and calls. The dinosaurs never truly disappeared. Some simply traded thunderous footsteps for morning birdsong.

Fossil Oviraptor Image: Danny Ye, License: 2765957049

ANCIENT LIFE IN EGYPT'S GIZA PLATEAU

Fossil Sand Dollar in Limestone

Long before the Nile carved its fertile valley, and before the pyramids rose from the desert sands, Egypt was home to warm tropical seas and lush river deltas teeming with life. 

The rocks surrounding the Giza Plateau preserve fragments of that distant world, offering a window into the deep past beneath one of humanity’s most iconic landscapes.

The limestone used to build the pyramids—particularly the Eocene formations around Giza, Cairo, and Fayum—is packed with marine fossils. 

Most abundant are Nummulites, the large disc-shaped foraminifera that make up much of the Tura limestone. But they are not alone. 

These fossil beds also contain echinoids (sea urchins), gastropods (snails), bivalves (clams), and coral fragments,  showing us the ecosystems that thrived in the shallow, sunlit seas that once lapped across northern Africa some 50 million years ago. 

Just southwest of Giza, the Fayum Depression preserves one of the world’s most remarkable fossil records of Eocene and Oligocene life. 

Eocene Whale, Basilosaurus isis

Here, paleontologists have unearthed the remarkable remains of early whales such as Basilosaurus isis and Dorudon atrox — ancient giants that once ruled the warm, tropical waters of the Tethys Ocean some 40 million years ago. 

These were not the whales we know today, but their distant ancestors, caught in a fascinating stage of evolution as land-dwelling mammals made the final leap to a fully aquatic life.

Basilosaurus, whose name means “king lizard” (a misnomer given before its true identity as a mammal was known), stretched over 18 meters long. 

Its serpentine body, lined with powerful vertebrae, suggests it swam with sinuous, eel-like motions, prowling the ancient seas for prey. Alongside it swam Dorudon, smaller but no less important — a sleek, dolphin-sized whale with sharp conical teeth, thought to have been a juvenile form of Basilosaurus until later discoveries revealed it was a species in its own right.

Both species had vestigial hind limbs — tiny, fully formed legs complete with toes — a beautiful anatomical echo of their terrestrial past. They are some of the clearest fossil evidence of the evolutionary transition from land mammals to marine cetaceans.

The bones of these ancient whales have been found in exquisite detail at Wadi Al-Hitan, the Valley of the Whales, a UNESCO World Heritage Site in Egypt’s Western Desert. There, under the scorching desert sun, hundreds of skeletons lie preserved in golden sandstone, exactly where these animals once swam and died. 

The surrounding sediments also hold fossils of early elephants, crocodiles, turtles, and primitive primates, painting a vivid picture of Egypt as a subtropical shoreline rich with mangroves and marine life.

Even closer to Cairo, smaller outcrops of Eocene limestone reveal the same story on a smaller scale—an abundance of microfossils and shell fragments that speak of warm, nutrient-rich waters. These deposits connect the geological dots between Egypt’s marine past and the materials used to build its ancient monuments.

In a poetic sense, the very stones of Giza are part of Egypt’s fossil heritage. The blocks that form Khufu’s pyramid are the lithified remains of ancient organisms that once thrived in the Tethys Sea.

The desert that now seems so still was once a shallow sea teeming with life — a sea whose memory remains written in stone. Every block is a fossil bed in miniature, a silent record of a vanished ocean that endures now as the foundation of one of the greatest wonders of the world.

A CITY WITHIN A CITY: FOSSIL CORAL

Fossil Coral — A City within a City

Here are some beauties for you — lovely fossil coral, frozen in stone yet once very much alive. 

At first glance it looks like a single organism, but that's the clever bit. 

Corals are really bustling little cities, built by thousands of tiny marine animals called polyps. Think of them as the world's oldest condominium developers... only with much better architecture and absolutely no strata council meetings.

Corals belong to the class Anthozoa within the phylum Cnidaria, making them close cousins of sea anemones and jellyfish. 

Together, these tiny builders have spent hundreds of millions of years constructing vast reefs that became home to an astonishing diversity of marine life.

Some corals even keep diaries. Deep-sea bamboo corals (Isididae), for example, lay down annual growth bands much like the rings of a tree. 

Those delicate layers preserve year-by-year records of changing ocean conditions, allowing us to reconstruct ancient climates with remarkable precision. Today, those same growth bands are also helping us understand one of the greatest challenges facing our oceans: ocean acidification.

Another remarkable form is the microatoll. These coral colonies have living edges that remain submerged while their tops die once they reach the average low-tide level. Their flattened shape quietly records changing sea levels through time. 

By studying their growth patterns and using radiocarbon dating to measure the decay of Carbon-14, we can piece together detailed histories of Holocene sea-level change spanning thousands of years.

Modern corals are facing some formidable challenges. Tropical sea temperatures have risen by roughly 1°C over the past century, triggering widespread coral bleaching events. 

When ocean waters become too warm, corals expel the tiny symbiotic algae—zooxanthellae—that provide much of their food and their brilliant colours. Left without their microscopic partners, reefs turn ghostly white and, if stressful conditions persist, many colonies die.

The story isn't entirely one of doom, though. Corals have shown an impressive capacity for adaptation, even if they don't make it look particularly dramatic. Being firmly cemented to the seafloor means they aren't exactly packing their bags and moving to cooler neighbourhoods. 

Instead, many are changing partners. Different strains of zooxanthellae vary in their tolerance to heat, and we are seeing more heat-resistant varieties becoming established in warmer waters. There is a trade-off, however. These hardy algae tend to photosynthesize more slowly, meaning the corals often grow more slowly as well.

In places like the Gulf of Mexico, warming seas have already shifted the distribution of iconic staghorn and elkhorn corals. Across many reefs, slower-growing but more heat-tolerant colonies are becoming increasingly common. 

Some reefs tucked into cooler ocean currents may even serve as refuges, buying precious time as the climate continues to change.

Corals reproduce both sexually and asexually. While cloning allows successful colonies to spread efficiently, it also limits the genetic diversity that fuels rapid evolution. 

Their long lifespans and remarkably stationary lifestyle mean adaptation can be slower than the pace of environmental change. Even so, these ancient architects have survived countless upheavals over hundreds of millions of years.

Holding a fossil coral is a reminder that reefs have witnessed worlds come and go. Long before whales, seabirds, or even the dinosaurs, coral colonies were quietly building underwater kingdoms, one tiny polyp at a time. The fossil before us is not simply stone—it is the preserved foundation of an ancient ecosystem, a snapshot of oceans that disappeared long before our own began.

SACRED CEPHALOPODS: OCTOPUS TAK'WA

This lovely with her colourful body is an octopus. Like ninety-seven percent of the world's animals, she lacks a backbone. 

To support their bodies, these spineless animals — invertebrates — have skeletons made of protein fibres. 

This flexibility can be a real advantage when slipping into nooks and crannies for protection and making a home in seemingly impossible places.

On the east side of Vancouver Island, British Columbia, Canada, there is an area called Madrona Point where beneath the surface of the sea many octopus have done just that. This is the home of the Giant Pacific Octopus, Enteroctopus dofleini, the largest known octopus species.

The land above is the home of the Snuneymuxw First Nation of the Coast Salish who live here, on the Gulf Islands, and along the Fraser River. In Hul'q'umin'um' — the lingua franca of the Snuneymuxw First Nation and the many First Nations of Cowichan Tribes , a living language that expresses their worldview and way of life — the word for octopus is sqi'mukw'. 

In the Kwak̓wala language of the Kwakiutl or Kwakwaka'wakw, speakers of Kwak'wala, further north on Vancouver Island, octopus or devil fish are known as ta̱k̕wa.

I have gone scuba diving at Madrona Point many times and visited the octopus who squeeze into the eroded sections of a sandstone ledge about 18 metres or 60 feet below the surface. 

On one of those trips, my friend Suzanne Groulx ran into one of the larger males swimming just offshore. I was surfacing as I heard her shriek clear as a bell. Sound moves through water about four times faster than it does through the air — faster than a jet plane. 

On that day, I suspect Suzanne was neck and neck both in sound and motion. Seconds later, she popped up a good three feet above the surf, still screaming. I have never seen anyone surface quite so quickly — dangerous and impressive in equal measure. Her coming up that fast meant her lungs were expanding rapidly as the air inside doubled every 30 ft as it was released from the pressure of the sea... very dangerous!

It was on another of those trips that I met Philip Torrens, with whom I would later co-author, In Search of Ancient BC.     

While the entire coastline is beautiful to explore, it was visiting the octopus that drew me back time and time again. I have seen wee octopus the size of the palm of your hand, large males swimming and feeding and the lovely females tucked into their nursery homes.

After forty days of mating, the female Giant Pacific Octopus attach strings of small fertilized eggs to the rocks within these crevices and call it home for a time — generally five months or 160 days. When I visit, I sometimes bring crab or sea urchin for her to snack on as the mothers guarding these eggs do not leave to hunt, staying ever vigilante protecting their brood from predators. All the while she is here, she gently blows fresh water over the eggs.

And sadly, this will be her only brood. Octopus breed once in their too-short lives. Males die directly after mating and females die once their young have hatched. They live in all the world's oceans and no matter the species, their lifespans are a brief one to five years. I rather hope they evolve to live longer and one day outcompete the humans who like to snack on them.

Octopus are soft-bodied, eight-limbed molluscs of the order Octopoda. They have one hard part, their beaks, which they use to crack open clams, crab and crustaceans. They are ninja-level skilled at squeezing through very tight holes, particularly if it means accessing a tasty snack. The size of their beaks determines exactly how small a hole they can fit through. Looking, you would likely guess it could not be done, but they are amazing — and mesmerizing!

At the Vancouver Aquarium, they have been known to unscrew lids, sneak out of one tank to feed in another then slip back so you do not notice, open simple hooks and latches — burglars of the sea. They can also change the colour and texture of their skin to blend perfectly into their surroundings. You can look for them around reefs and rocky shores. 

There are 300 species of octopus grouped within the class Cephalopoda, along with squid, cuttlefish, and nautiloids. 

The oldest fossil octopus at 300 million years old is Pohlsepia mazonensis from Carboniferous Mazon Creek fossil beds in Illinois. The only known specimen resembles modern octopuses with the exception of possessing eight arms and two tentacles (Kluessendorf and Doyle 2000).

My favourite fossil octopus is the darling Keuppia levante (Fuchs, Bracchi & Weis, 2009), an extinct genus of octopus that swam our ancient seas back in the Cretaceous.

EPIC FOSSIL HUNTING: TYAUGHTON & CASTLE PEAK

Some places stay with you long after you've left them.

Tyaughton, north of Gold Bridge beneath the rugged skyline of Castle Peak, is one of those places for me. 

It is wild, breathtaking country where glaciers cling to the mountains, marmots whistle from rocky slopes, golden eagles drift effortlessly overhead, and every winding trail feels like it leads into another chapter of Earth's history.

It is also one of British Columbia's most remarkable places to hunt Triassic and Jurassic fossils.

Standing among these peaks, it is almost impossible to picture that some 200 to 220 million years ago this entire landscape lay beneath a warm tropical sea. Instead of alpine meadows and mountain goats, graceful ammonites cruised the water column while crinoids swayed gently on the seafloor. 

Brachiopods, bivalves, gastropods and countless other marine creatures flourished in an ocean that has long since disappeared.

Those ancient seabeds would one day be lifted thousands of metres skyward as the Coast Mountains rose around them, preserving their story within layers of limestone and shale.

Badouxia ammonites

There is nothing quite like splitting open a weathered slab and finding a beautifully preserved ammonite waiting inside. 

One careful tap with the rock hammer and suddenly you are sharing a moment with an animal that last saw daylight before the first dinosaurs truly came into their own. 

Those discoveries never lose their magic.

The nearby Taseko Lakes region has yielded one of the finest collections of Late Hettangian ammonites ever discovered in British Columbia. 

Over many remarkable field seasons, we documented thirty-five ammonite taxa and described three entirely new species, greatly expanding our understanding of Early Jurassic life along the ancient western margin of North America.

That work holds a particularly special place in my heart.

I had the enormous honour of having one of those new species named after me by Dr. Louise Longridge of the University of British Columbia. Fergusonites hendersonae is a beautiful little nektonic carnivorous ammonite that now carries my family name through the scientific literature. It remains one of the greatest honours of my life.

I first met Louise as an undergraduate, and later had the privilege of joining expeditions into the Taseko backcountry alongside wonderful friends from the Vancouver Island Paleontological Society, the Vancouver Paleontological Society, and researchers from UBC. 

We followed in the footsteps of the legendary Dr. Howard Tipper, whose meticulous geological mapping and extraordinary knowledge of Jurassic ammonites transformed our understanding of this part of British Columbia. His maps remain the foundation for much of the work we continue today.

Those expeditions were unforgettable.

Over several field seasons we endured altitude sickness, rain, snow, grizzly bears, and more than a few freezing nights camped beside glaciers. Helicopters spared us days of hiking into some of the most inaccessible fossil localities in the province, where every outcrop held the possibility of something extraordinary. 

Along with the three new ammonite species, we recovered beautifully preserved gastropods, crustaceans, and countless specimens that continue to help us piece together the history of these ancient seas.

What makes these fossils so important is not simply their beauty.

Ammonites evolved rapidly, making them some of our finest index fossils. By comparing species found here with those from Nevada, Alaska, South America, New Zealand, and Europe, we can correlate rock layers across continents and refine the geological timescale for the Early Jurassic. 

These tiny coiled shells have become some of our most powerful tools for understanding how life recovered following the greatest mass extinction our planet has ever known.

Collecting in this country also comes with responsibility. Many of these fossil localities lie within sensitive alpine environments or protected areas where collecting requires permits or is prohibited altogether. We tread lightly, respect the land, follow regulations, and remember that we are visitors in landscapes that have preserved these stories for hundreds of millions of years.

That is perhaps what I love most. You stand surrounded by towering peaks, yet beneath your boots lies the floor of an ancient tropical ocean. The mountains themselves are built from forgotten seas, and every fossil reminds us that Earth is never still. 

Continents wander. Oceans open and close. Mountains rise. Species flourish, disappear, and give way to those yet to come.

BARNACLES: CUVIER TO DARWIN

Barnacles All Closed Up

One of the most interesting and enigmatic little critters we find at the seashore are barnacles. 

They cling to rocks at the waters' edge, closed to our curiosity, their domed mounds like little closed beaks shut to the water and the world.

They choose their permanent homes as larvae, sticking to hard substrates that will become their permanent homes for the rest of their lives. 

It has taken us a long time to find how they actually stick or what kind of "glue" they were using.

A clever fellow from Duke University's Marine Laboratory in Durhan, North Carolina finally cracked that puzzle. Instead of chopping up barnacles to see what makes them stick, he observed and collected the oozing glue from some Amphibalanus amphitrite as they secreted it.

Remarkably, the barnacle glue sticks to rocks in a similar way to how red cells bind together. Red blood cells bind and clot with a little help from some enzymes. 

These work to create long protein fibres that first blind, clot then form a scab. The mechanism barnacles use, right down to the enzyme, is very similar. That's especially interesting as about a billion years separate our evolutionary path from theirs.

So, with the help of their clever enzymes, they can affix to most anything – ship hulls, rocks, and even the skin of whales. If you find them in tidepools, you begin to see their true nature as they open up, their delicate feathery finger-like projections flowing back and forth in the surf.

Barnacle Cirri Seeking Tasty Plankton

Those wee feather-like bits you see are called cirri. Eight pairs of these thoracic limbs help barnacles to filter tasty bits of plankton from the surrounding water into their mouths.

Barnacles are cirripedes, a kind of crustacean that is covered with hard plates of calcium carbonate. Named for their cirri, they live stuck to hard surfaces in and around our world's oceans. 

While they do not look like crustaceans, they are definitely part of this taxonomic grouping that includes crab, lobster, crayfish, prawn, krill, and woodlice.

BARNACLES IN KWAK'WALA

In the Kwak̓wala language of the Kwakwaka'wakw, speakers of Kwak'wala, of the Pacific Northwest, barnacles are known as k̕wit̕a̱'a and broken barnacle shells are known as t̕sut̕su'ma.

BARNACLES IN THE FOSSIL RECORD

They have an old history. Their ancestors can be traced back to animals such as Priscansermarinus that lived during the Middle Cambrian – some 510 to 500 million years ago. I found my first barnacle fossil at a fossil site called Muir Creek on the south end of Vancouver Island. 

The wonderfully accessible foreshore fossil exposures at Muir are Oligocene, 20-25 million years old. This is about the time that barnacles can be found more readily as skeletal remains.

One of the reasons for the limited number of barnacle remains in the fossil record is their preferred habitat – high energy, shallow ocean environments. These tend to see a lot of tidal action that leads to erosion and barnacles being broken apart, slowly eroded down to bits too small to recognize for what they are.

One of the fossil remains we do find are not the barnacles themselves, but trace fossils of acrothoracican barnacle borings from Rogerella. These are commonly found in the fossil record beginning in the Devonian right up to today. Rogerella is a small pouch-shaped boring (a type of trace fossil) with a slit-like aperture currently produced by acrothoracican barnacles. 

These crustaceans extrude their legs upwards through the opening for filter-feeding (Seilacher, 1969; Lambers and Boekschoten, 1986). They are known in the fossil record as borings in carbonate substrates (shells and hardgrounds) from the Devonian to the Recent (Taylor and Wilson, 2003).

Barnacle Ancestry Goes Back to the Middle Cambrian

FROM MOLLUSCA TO ARTICULATA

For those of you who enjoy leaning into the geeky history of how we came to understand barnacles, I shall indulge you.

Barnacles were originally classified by Linnaeus and Cuvier as Mollusca, but in 1830 John Vaughan Thompson published observations showing the metamorphosis of the nauplius and cypris larvae into adult barnacles. He noted how these larvae were similar to those of crustaceans.

In 1834 Hermann Burmeister published further information, reinterpreting these findings. The effect was to move barnacles from the phylum of Mollusca to Articulata, showing naturalists that detailed study was needed to reevaluate their taxonomy.

Charles Darwin took up this challenge in 1846 and developed his initial interest in a major study published as a series of monographs in 1851 and 1854. Darwin undertook this study, at the suggestion of his friend Joseph Dalton Hooker, to thoroughly understand at least one species before making the generalizations needed for his theory of evolution by natural selection.

BARNACLES IN A NUT SHELL

Barnacles live life with unwavering commitment. Once they find the perfect spot on a rock, pier, whale, ship's hull, or unsuspecting sea turtle, they glue themselves down with one of the strongest natural cements known and settle in for good. There are no second thoughts, no moving to a nicer neighbourhood with a better view. Home is home.

These remarkable little crustaceans are suspension feeders, rhythmically sweeping tiny morsels of plankton and organic debris into their mouths using feathery, jointed legs called cirri. Those waving "feet" you see flicking through the water are actually highly specialized feeding appendages, tirelessly combing the sea for dinner. When the tide retreats, they pull those cirri safely inside and clamp their tough calcareous plates shut, waiting patiently for the ocean to return.

Now, about romance... barnacles have perhaps the most awkward dating life in the animal kingdom. 

Being permanently glued to a rock makes meeting new partners something of a logistical challenge. 

Evolution solved this problem in spectacular fashion: barnacles possess the longest penis relative to body size of any animal on Earth—sometimes extending eight times their own body length. It is an extraordinary adaptation that allows them to reach neighbouring barnacles without anyone having to leave home. 

If your love life depended on never moving from your favourite rock, you'd probably evolve some creative solutions too. I was speaking with friend and colleague, Adrienne Schmidt about this just today. 

After mating, fertilized eggs develop into tiny free-swimming nauplius larvae that drift through the plankton. As they grow, they transform into the cypris stage—a curious little explorer whose sole mission is to find the perfect place to settle. 

Once it chooses its forever home, it secretes its remarkable natural cement, attaches for life, builds its protective shell, and begins the whole wonderfully peculiar cycle again.

For creatures that spend their adult lives going absolutely nowhere, barnacles have evolved one of the most fascinating lifestyles in the sea.

VANCOUVER ISLAND'S ICE AGE CAVES: WHERE GIANT GROUND SLOTHS STILL SLEEP

There is a version of Vancouver Island that few ever see.

Not the emerald forests draped in moss, the crashing Pacific surf or the towering Douglas firs reaching skyward, but another world hidden beneath our feet. 

A world of silent limestone chambers where time slows to a crawl and the Ice Age still lingers in the darkness.

Deep within the island's karst cave systems lie the remains of an extraordinary lost ecosystem. 

Long before people paddled these shores, before cedar canoes skimmed the inlets and long before the glaciers finally loosened their grip, these caves became natural vaults, preserving the stories of some of the largest animals ever to call Vancouver Island home.

Among the most remarkable are the giant ground sloths. The thought almost seems impossible. Sloths? On Vancouver Island? Yet it is wonderfully true.

The giant ground sloth Megalonyx jeffersonii, Jefferson's Ground Sloth, wandered British Columbia during the closing chapters of the Pleistocene. 

Unlike the tiny tree sloths that spend their days hanging upside down in the tropical forests of Central and South America, these impressive herbivores stood nearly three metres (10 feet) tall when rearing up on their hind legs. 

Giant Ground Sloth

Built like shaggy tanks, they browsed shrubs and young trees using long, powerful forelimbs tipped with formidable claws that were better suited to pulling branches toward them than defending against predators.

As the last glaciers retreated some 14,000 to 12,000 years ago, Vancouver Island was transforming. 

Vast ice sheets gave way to open parklands, willow thickets and patches of spruce, creating a landscape rich enough to support these gentle giants.

They were not alone.

The caves have yielded an astonishing collection of Ice Age fauna, each discovery adding another piece to the puzzle of a vanished world. 

Ancient bison once grazed these emerging landscapes. Caribou and deer moved across newly exposed valleys. 

Wolves and foxes hunted among the tundra-like plains. Black bears sought shelter in the caves, while the colossal short-faced bear, Arctodus simus, one of North America's largest terrestrial predators, also roamed these lands. 

Arctodus simus, La Brea Tar Pits

There is a wonderful fossil specimen of Arctodus simus on display at the La Brea Tar Pits in California, if you ever have the chance to visit. 

Smaller creatures, from marmots to birds, left their own subtle traces within the cave sediments, creating an extraordinary record of an ecosystem rebuilding itself after the glaciers.

Unlike many fossil localities exposed on cliffs or riverbanks, these treasures survived because they were tucked safely away underground. 

Animals occasionally wandered into cave entrances, became trapped in vertical shafts or sought temporary shelter, their remains gradually buried beneath sediments that remained cool, dry and remarkably undisturbed for thousands of years.

Recovering these fossils has never been the work of a lone adventurer. Their discovery is the story of collaboration. 

Many of Vancouver Island's fossil-bearing caves were first explored by dedicated local cavers and members of the BC Speleological Federation. Crawling through tight passages, descending deep shafts, and carefully mapping these hidden worlds, they occasionally encountered ancient bones resting undisturbed on cave floors. 

Knowing their importance, they did exactly what every responsible caver hopes they would do—they left the remains where they were and contacted researchers, museums and universities so the discoveries could be properly studied.

That decision preserved an irreplaceable scientific record.

My good friend Mike Trask (Oh, how I miss that man!) also contributed greatly to our knowledge of these caves and the wonders held within. 

Port Eliza Cave, Vancouver Island

Over the years, archaeologists Dr. Quentin Mackie and Dr. Duncan McLaren of the University of Victoria have led investigations of several of Vancouver Island's remarkable cave sites, including the famous Port Eliza Cave, located on the rugged west coast of Vancouver Island near the Holberg Quatsino Sound region.

Their research has revealed rich fossil assemblages that help us understand how animals—and eventually people—lived as the Ice Age drew to a close.

Quaternary geologist and geoarchaeologist Dr. Michael C. Wilson has also played a pivotal role in documenting these cave deposits. 

His comprehensive analyses of the faunal remains have helped establish the presence of giant ground sloths, bison, short-faced bears and many other species, painting an increasingly detailed picture of Vancouver Island's ancient ecosystems during a period of profound environmental change.

Together, scientists, archaeologists, geologists and volunteer cavers have opened a remarkable window into British Columbia's deep past. 

Vancouver Island has worn many faces. It has been buried beneath kilometres of ice, transformed into open tundra, crossed by giant sloths, stalked by immense bears and slowly reclaimed by the forests we know today.

A special thank you to Shirley Renaud for rekindling this wonder for all of us with her thoughtful questions around these cave systems and the Ice Age assemblages they hold. 

Image: A skeleton of M. jeffersonii on display in the Orton Geological Museum. This skeleton was mounted in 1896. Photo by Fuzheado. 

Image: Arctodus simus, La Brea Tar Pits. Photo by Jonathan Chen

Port Eliza Cave: North American West Coast interstadial environment and implications for human migrations, ScienceDirect: https://www.sciencedirect.com/science/article/abs/pii/S0277379103000921

Late Wisconsinan Port Eliza Cave deposits and their implications for human coastal migration, Vancouver Island, Canada. https://www.researchgate.net/figure/Location-of-Port-Eliza-Cave-along-the-hypothesized-coastal-migration-route_fig1_229940158

TENDER GIANTS: MAMENCHISAURUS SINOCANADORUM

For those who know me—and many of you know me rather well—you'll know I carry around a very long bucket list.

Some of it is wonderfully practical. There are places I ache to visit, museums I long to wander, fossils I dream of collecting with muddy boots and sunburned shoulders, and so many of you I'd love to spend a day in the field with, swapping stories while splitting shale or scanning a cliff face for the tiniest hint of ancient life.

Those dreams are mostly a matter of time, opportunity, and perhaps convincing my bank account to cooperate.

But there are other wishes that no amount of planning can ever make possible.

If I could choose one impossible gift, it would be to step back into deep time. Not to change anything. Just to watch.

To stand unnoticed beneath the towering trees of the Jurassic and witness moments forever lost to us. The fierce ones, certainly. The great hunts and desperate escapes. But even more than those, I'd love to see the quiet moments. A parent watching over its young. Animals greeting one another. The ordinary lives hidden between the fossils we find millions of years later.

One of the scenes I return to again and again is this.

The air is warm and heavy with the rich scent of damp earth, resin, and fresh conifer needles. Giant tree ferns crowd the shoreline, while dragonflies the size of small birds skim across still water that mirrors the fading sky. 

Somewhere beyond the trees, insects sing, and the calls of unseen dinosaurs drift through the evening air.

A family of Mamenchisaurus sinocanadorum moves silently into the shallows.

The immense adults wade with astonishing grace, each careful step sending gentle ripples across the lake. Between them, two youngsters splash through the water, still awkward in bodies that will one day become truly colossal. 

Their impossibly long necks sway with effortless elegance as they browse from branches leaning over the water's edge, occasionally pausing as if simply enjoying the coolness of the evening. 

There is no urgency. No violence. Only the quiet rhythm of another day drawing to a close in the Jurassic.

Mamenchisaurus sinocanadorum lived about 160 million years ago in what is now China and is celebrated for possessing one of the longest necks ever to evolve. At an astonishing 15 metres (50 feet), its neck alone was longer than many entire dinosaurs.

Despite their immense size, these remarkable sauropods were peaceful browsers, sweeping those extraordinary necks through the forest canopy to feed on conifers, cycads, ferns, and other lush Jurassic vegetation. Their anatomy allowed them to forage across a huge area without constantly moving their massive bodies—an elegant solution for an animal that could exceed 25 metres (82 feet) in length.

Whenever I look at these magnificent giants, I'm reminded that not every giant in Earth's history was built for conflict. Some were architects of quiet landscapes, moving through ancient forests with remarkable gentleness. 

They left no roar echoing across the valley, only soft footfalls, the rustle of leaves high in the canopy, and widening circles on the surface of a Jurassic lake as twilight settled over a world we know today only through stone.

WADI AL-HITAN: VALLEY OF THE WHALES

Fossil Whale Skeleton, Wadi Al-Hitan

Egypt’s Eocene limestones captivate geologists and paleontologists from around the world. 

These pale, fossil-rich rocks hold the story of an ancient sea and the remarkable creatures that once swam through it.

Modern fieldwork in the Fayum Depression, Wadi Al-Hitan — the Valley of the Whales — and the outcrops near Giza and Cairo is revealing how the shoreline of the Tethys Ocean shifted over tens of millions of years — and how life adapted as land and sea traded places again and again.

Researchers from the Egyptian Geological Museum, the University of Michigan, and Cairo University are combining cutting-edge tools with time-honored field methods. Satellite imaging and drone photogrammetry provide sweeping, high-resolution views of the fossil beds, while detailed stratigraphic logging, sediment sampling, and fossil excavation bring the story into focus layer by layer.

Fossil Whale from Wadi Al-Hitan

The work reveals a stunning environmental transformation. 

The lower rock units record shallow marine deposits packed with Nummulites, corals, and mollusks — life that thrived in the warm, clear waters of the early Eocene Tethys. 

Above these layers, the sediments change in both color and character, grading upward into deltaic and freshwater deposits filled with the fossils of turtles, crocodiles, and early land mammals. It is a geological diary of Egypt’s slow emergence from sea to land.

Wadi Al-Hitan — The Valley of the Whales

Wadi Al-Hitan — The Valley of the Whales

Nestled deep in Egypt’s Western Desert, about 150 kilometers southwest of Cairo, lies Wadi Al-Hitan, one of the world’s most extraordinary fossil sites. 

Once part of the vast Tethys seaway, this now-arid valley was a shallow coastal lagoon some 40 to 50 million years ago, during the Eocene.

Here, teams of paleontologists meticulously map and preserve the articulated skeletons of ancient whales — including Basilosaurus isis and Dorudon atrox — whose bones often lie exactly where the animals came to rest on the seafloor. 

Over time, they were entombed in fine-grained sandstone and limestone, preserving everything from vertebrae and skulls to delicate ribs and vestigial hind limbs.

The surrounding rocks tell a parallel story. Their alternating layers of sandstone, marl, and limestone record shifts in sea level and climate — tidal flats giving way to open marine conditions, then to lagoons choked with vegetation and early mangroves. 

Geochemists analyze the isotopic composition of these sediments to reconstruct ancient seawater temperatures and salinity, while microfossil specialists examine foraminifera and ostracods under the microscope to determine just how deep and warm the waters once were.

Wadi Al-Hitan — The Valley of the Whales

Wadi Al-Hitan’s fossil bounty extends beyond whales. 

The valley has yielded remains of sharks, sawfish, rays, sea cows (Sirenia), turtles, crocodiles, and even early land mammals, offering a vivid snapshot of an ecosystem in transition — one of the last great marine habitats before North Africa began its slow drift toward desert.

The Valley of the Whales is a UNESCO World Heritage Site, protected both for its breathtaking fossil record and its haunting desert beauty. 

Walking through it feels like time travel: the sandstone cliffs glow golden in the sun, and the bones of whales lie half-exposed in the sand — silent witnesses to a vanished ocean. It is a peaceful place to visit. Bone dry, barren but with a rich history.

Fossil Whale from Wadi Al-Hitan

Every fossil, every layer of sediment adds a new brushstroke to the portrait of Egypt’s Eocene world — a subtropical paradise where whales swam through mangroves, coral reefs teemed with life, and the ancestors of modern elephants grazed along the shore.

Beneath the desert sands, these rocks still whisper the story of 50 million years of evolution, of seas that rose and fell, and of creatures that bridged the worlds of land and water — all written in stone.

Photo Credits: Wadi al-Hitan | Wikimedia Commons

BAA-D TO THE BONE: SHEEP IN THE FOSSIL RECORD

The story of sheep begins long before shepherds, wool sweaters, and stone fences. 

It starts in the rugged mountains and open grasslands of Eurasia, where their wild ancestors evolved into some of the most sure-footed herbivores on the planet.

Modern sheep belong to the genus Ovis, part of the Bovidae family—a wonderfully successful group that includes goats, musk oxen, antelope, cattle, bison, and buffalo. 

While the family itself first appears in the fossil record around 18–20 million years ago during the Early Miocene, true sheep arrived considerably later.

The oldest fossils confidently assigned to the genus Ovis are roughly 3 to 4 million years old, dating to the Late Pliocene of Central Asia. 

These early sheep already possessed many of the features we recognize today: sturdy limbs built for climbing steep terrain, high-crowned teeth adapted for grazing abrasive grasses, and, in many species, impressive horns that played an important role in establishing dominance and attracting mates.

Unlike antlers, which are shed each year by deer, sheep horns are permanent structures. They consist of a bony core covered by a keratin sheath that continues to grow throughout life. Fossil skulls preserve the bony core, allowing us to study the size, curvature, and growth patterns of ancient animals in remarkable detail.

One of the best-known fossil sheep is Ovis ammon, the ancestral argali. While living argali still roam the mountains of Central Asia today, fossil representatives reveal a lineage that has endured repeated cycles of glaciation, warming climates, and shifting landscapes throughout the Pleistocene.

During the Ice Age, wild sheep expanded across much of Eurasia and into North America. Their arrival on this continent came by way of Beringia—the broad land bridge that periodically connected Siberia and Alaska when sea levels dropped during glacial periods.

One particularly impressive Ice Age species is Ovis canadensis, the ancestor of today's bighorn sheep. Fossils dating back several hundred thousand years have been recovered from caves, river terraces, and ancient packrat middens throughout western North America. Some populations developed truly spectacular horns, reflecting both healthy nutrition and generations of competition between powerful rams.

Another fascinating relative is Ovis dalli, the ancestor of modern Dall sheep found today in Alaska and northwestern Canada. Fossils show that these hardy mountain specialists persisted through dramatic climatic swings, retreating to suitable alpine habitats as glaciers advanced and expanded again when conditions improved.

We learn an extraordinary amount from fossil sheep. Their teeth record changing diets as grasslands spread across continents. Horns reveal patterns of sexual selection and social behaviour. Limb bones speak of life on precipitous slopes where balance, agility, and endurance meant survival.

Even their dung has stories to tell.

Ancient sheep droppings recovered from caves and rock shelters sometimes preserve pollen, seeds, and plant fragments, offering tiny snapshots of Ice Age vegetation. Together with isotope analysis of fossil bones and teeth, these discoveries help us reconstruct entire ecosystems—revealing not only what sheep were eating, but also the climate, rainfall, and seasonal changes that shaped their world.

Around 10,500 to 11,000 years ago, humans began domesticating wild mouflon (Ovis orientalis) in the Fertile Crescent. This marked one of the great turning points in human history. Sheep became among the earliest domesticated livestock, providing meat, milk, hides, bone, and eventually the wool that transformed clothing, textiles, and trade across civilizations.

Domestic sheep also left a fossil record of sorts. Archaeological sites preserve bones showing changes brought about by selective breeding. Horn size often became reduced, body proportions shifted, and age profiles within herds reveal increasingly sophisticated management by early farming communities.

Today, more than a billion domestic sheep live around the world, descendants of animals that once navigated rugged mountain landscapes long before humans ever imagined weaving wool into cloth.

There is something rather poetic about that continuity.

From windswept Pliocene ridges to Ice Age cliffs, from Neolithic villages to modern farms, sheep have quietly accompanied the changing face of our planet. Their fossils tell us stories of climate, migration, adaptation, and survival over millions of years.

And yes... every one of those magnificent spiral horns began with an ancestor who simply kept putting one hoof in front of the other. Sometimes, steady really does win the evolutionary race.

MAMMOTH MYSTERY IN TEXAS: WACO

Waco Mammoth National Moment Fossil Site

If you’ve ever wondered what happens when a herd of Columbian mammoths, a flash flood, and 21st-century paleontologists all meet in Waco, Texas… well, Waco Mammoth National Monument has your answer: deep time drama with a fossilized cast of 24 large, hairy, and extremely unlucky Pleistocene mammals.

But before we get to the scientists in khakis, let’s rewind 67,000 years and meet the star of the show.

Waco Mammoth National Monument in Waco, Texas, stands today as one of the most significant Pleistocene paleontological sites in North America. 

It preserves the remains of 24 Columbian mammoths, Mammuthus columbi, and several other large mammals—including camelids, a juvenile saber-toothed cat, and smaller fauna—offering an unparalleled window into Late Pleistocene ecosystems and catastrophic mortality events.

Among the individuals identified at the site, Adult Male Mammoth Q. is one of the most impressive. In life, he would have been:

• Over 8 feet tall at the shoulder
• Approximately 10 tons in mass
• Equipped with tusks stretching up to 14 feet

As a mature bull Columbian mammoth, he likely lived a largely solitary life except during seasonal breeding periods. Columbian mammoths occupied open grasslands and savannas across the southern United States and Mexico, and Mammoth Q. would have spent his days feeding on grasses, sedges, and woody vegetation that thrived in the warm, dry climate of Pleistocene central Texas.

Sedimentology and taphonomic evidence suggest that Mammoth Q. met his end during a severe flooding event. 

The Bosque River and its tributaries were prone to flash flooding during the Pleistocene, and a sudden high-energy flow likely trapped and buried this large adult along with other isolated individuals. 

The result is an exceptionally preserved skeleton that provides key data on Columbian mammoth anatomy and population structure.

Most of the mammoths found at Waco belong not to solitary adults but to a nursery herd—an assemblage of females and juveniles that perished together in an earlier catastrophic flood event approximately 65,000–67,000 years ago. Their position within the sediments, the lack of significant post-mortem disturbance, and the articulation of many skeletons indicate rapid burial and minimal scavenging.

This makes the Waco site the only known fossil locality in North America containing a probable mammoth nursery herd, offering rare insight into social behavior, herd structure, and mortality patterns.

The site remained unknown until 1978, when local teenagers Paul Barron and Eddie Bufkin discovered a large bone eroding from a ravine near the Bosque River. Their discovery prompted the involvement of Calvin Smith, then director of Baylor University’s Strecker Museum, who recognized the bone as part of a mammoth femur.

Systematic excavation began in the 1980s and continued for decades under the leadership of:

• Dr. Calvin Smith
• Dr. David Lintz, who played a major role in interpreting the site’s multi-event deposition history
• Dr. Brenda Scott, contributing to specimen documentation
• Numerous Baylor University staff, students, and community volunteers

As excavations continued, researchers identified successive burial layers, additional individuals, and evidence for multiple flood events responsible for the mass mortality.

The importance of the site grew steadily, both for scientific research and for public education. A climate-controlled dig shelter was constructed to allow visitors to view fossils in situ, preserving the contextual integrity of the specimens.

In 2015, the site received national recognition when President Barack Obama designated it Waco Mammoth National Monument, protecting the locality and enabling continued collaboration among the National Park Service, Baylor University, and the City of Waco.

Waco Mammoth National Monument is unique in offering direct, above-surface access to an active fossil locality. Visitors can observe:

• Articulated mammoth skeletons still embedded in the original Pleistocene sediments
• The remains of a camel (Camelops sp.)
• Evidence of multiple burial events and stratigraphic layers representing different moments in site history
• Interpretive exhibits detailing paleoecology, taphonomy, and excavation history

The dig shelter provides a controlled environment that stabilizes the fossils and allows ongoing scientific research without removing specimens from their original context.

Waco Mammoth National Monument stands today as one of the premier paleontological localities in the United States, preserving the story of a herd lost to sudden environmental change and of solitary individuals like Mammoth Q. who represent the broader ecology of the Pleistocene South.

Whether for scientific research, educational interest, or a firsthand view of ancient life preserved precisely where it fell, the site offers a rare opportunity to engage directly with deep time and the processes that shape the fossil record.

FOSSILS OF EGYPT: TRACING LIFE FROM LAND TO SEA

Spinosaurus, Fukui Prefectural Dinosaur Museum

Egypt is often celebrated for its pyramids and pharaohs, but beneath those golden sands lies a much older and equally astonishing legacy — the fossil record of a land that has shifted from lush tropical forests to inland seas and back again.

From the Western Desert to the Fayum Depression and Wadi Al-Hitan (the Valley of the Whales), Egypt’s rocks preserve nearly 100 million years of life on Earth, from the Cretaceous dinosaurs that roamed its river plains to the Eocene whales that swam through the Tethys Ocean.

Over the past few posts, we've looked at the geological wonders of Egypt. Here is a deeper look at some of the many interesting fossil species to be found in this rich paleontological playground.

Petrified Wood — A Forest Turned to Stone

Across Egypt’s deserts, the ground often glitters with fossilized trees. The Petrified Wood Protectorate near New Cairo, along the Cairo–Suez road, and wide stretches of the Western Desert are carpeted in ancient trunks and branches turned to stone.

These fossil forests are vivid evidence that much of Egypt was once a humid, tropical landscape, rich with vegetation. The trees, buried in sediments and permineralized over millions of years, became exquisitely preserved in silica. Today, their polished cross-sections shimmer with bands of reds, browns, and golds — a striking reminder of the region’s deep ecological transformations.

Reptiles of the Fayum — Turtles, Crocodiles, and Giants — The Fayum Depression has yielded a wealth of Eocene reptile fossils that speak of a warm, watery world teeming with life. Land tortoises like Testudo ammon roamed the ancient floodplains, while river turtles such as Podocnemis blanckenhorni and Stereogenys pelomedusa swam through slow-moving channels. 

Even more dramatic are the remains of Gigantophis, one of the largest snakes ever discovered, and Tomistoma, a crocodile-like predator from the Qasr al-Sagha Formation. These reptiles hint at an ecosystem that blended mangroves, lagoons, and river deltas — a mosaic of habitats where both freshwater and marine species thrived.

Birds of an Ancient Delta — The Fayum’s fossil beds also record an impressive diversity of Eocene and Oligocene birdlife. The ancient wetlands once supported ospreys (Pandionidae), flamingos (Phoenicopteridae), herons, cranes (Gruidae), cormorants (Phalacrocoracidae), and even the massive shoebilled stork (Balaenicipitidae).

These avian fossils, comparable to species found today around Lake Victoria and the Upper Nile, suggest a vibrant, subtropical ecosystem rich in lakes and marshes — a far cry from the arid desert we see today.

Mammals of the Fayum — Whales, Elephants, and Early Primates

The mammalian fossils of Egypt are among the most extraordinary in the world. In the Fayum Depression and at Wadi Al-Hitan, paleontologists have uncovered a sweeping record of evolution from land to sea and from primitive mammals to the ancestors of modern species.

At Wadi Al-Hitan, skeletons of early whales — Basilosaurus isis, Dorudon atrox, and Phiomicetus — preserve a pivotal evolutionary moment when whales transitioned from walking on land to swimming in the sea. Their long, streamlined bodies and tiny hind limbs are beautiful testaments to nature’s adaptability.

Meanwhile, the terrestrial Fayum deposits reveal a menagerie of early mammals:

• Arsinoitherium, a massive, rhinoceros-like creature with twin horns;
• Moeritherium, a semi-aquatic ancestor of elephants and manatees;
• Palaeomastodon and Phioma, early proboscideans bridging the gap to modern elephants;
• and Megalohyrax, a giant relative of today’s small hyrax.

Carnivorous mammals also prowled these Eocene landscapes — species like Apterodon, Pterodon, and Hyaenodon, formidable predators of their time.

The Fayum Primates — Our Ancient Cousins — Among the Fayum’s most scientifically valuable discoveries are the fossils of early primates, bridging the gap between ancient prosimians and modern monkeys and apes.

From the lower sequence, we find forms like Oligopithecus savagei and Qatrania wingi, while the upper sequence preserves Catopithecus browni, Proteopithecus sylvia, and the well-known Apidium and Parapithecus species.

Perhaps most famous is Aegyptopithecus zeuxis, a small tree-dwelling primate with forward-facing eyes and a relatively large brain. It is often cited as one of the earliest known ancestors of modern Old World monkeys and apes — and, by extension, of humans.

These fossils from the Jebel Qatrani Formation provide an unparalleled window into primate evolution roughly 35 to 30 million years ago, when Africa’s tropical forests were home to our distant kin.

Dinosaurs of the Cretaceous Desert — Long before the whales and primates, Egypt’s landscape was dominated by Cretaceous dinosaurs. The Bahariya Formation and Nubian Sandstone have yielded fossils of immense sauropods and ferocious theropods, painting a vivid picture of life 95 million years ago.

Among the stars of this ancient cast are:

• The long-necked Aegyptosaurus and Paralititan, massive plant-eating sauropods;
• The sleek, predatory Bahariasaurus, Carcharodontosaurus, and Deltadromeus;
• The semi-aquatic Spinosaurus, with its iconic sail-backed spine — perhaps one of the most famous dinosaurs to ever emerge from African rock; and Mansourasaurus, a titanosaur discovered more recently, helping to link Africa’s late Cretaceous fauna with those of Europe and Asia.

These finds demonstrate that Egypt was once a fertile delta world of rivers and floodplains, where dinosaurs thrived long before the Sahara turned to sand.

Egypt’s Fossil Sites — Portals Through Time — Key fossil localities across the country continue to reveal Egypt’s ancient ecosystems:

• Wadi Al-Hitan — Eocene marine fossils, including whales and sea cows.
• Fayum Depression — rich terrestrial and freshwater deposits with early mammals and primates.
• Bahariya Formation — famous for Cretaceous dinosaurs and early vertebrates.
• Jebel Qatrani Formation — Oligocene primates and proboscideans.
• Qasr el Sagha Formation — reptiles, turtles, and early crocodilians.
• Upper Cretaceous Phosphates and Variegated Shale — marine invertebrates and early fish.
• Moghra Oasis — Miocene fossils bridging the gap between ancient and modern fauna.
• Queseir Formation — Upper Cretaceous (Campanian) deposit in the Kharga oasis of the Southwestern Desert where the first side-necked turtle Khargachelys caironensis can be found

Egypt’s fossils offer a spectacular narrative of evolution, climate, and change — from swampy Cretaceous river deltas to lush Eocene seas and forests, to the deserts we see today. 

Each discovery connects the story of Earth’s deep past with the land of the Pharaohs, revealing that Egypt’s most enduring monuments are not her pyramids, nor her simple blocks of stone, but the fossils buried them

Image Credit: Spinosaurus at the special exhibit of Fukui Prefectural Dinosaur Museum by Palaeotaku CC BY 4.0

UPPER CRETACEOUS FOSSILS OF HORNBY ISLAND

The rugged terrain of Hornby Island is formed from sediments of the upper Nanaimo Group which are also widely exposed on adjacent Denman Island and the southern Gulf Islands. 

To understand the ground we are walking upon, we need to peel back the layers of time. Hornby has a total stratigraphic thickness of 1350 m of upper Nanaimo Group marine sandstone, conglomerate and shales. 

These sediments are what we search through to find wonderfully preserved fossils where outcrops along the beachfront proffer them partially exposed. 

Four formations underlie the island from oldest to youngest, and from west to east: the Northumberland, Geoffrey, Spray and Gabriola.

During the upper Cretaceous, between ~90 to 65 Ma, sediments derived from the Coast Belt to the east and the Cascades to the southeast poured seaward to the west and northwest into what was the large ancestral Georgia Basin. This major forearc basin was situated between Vancouver Island and the mainland of British Columbia.

The Nanaimo Group as a whole represents largely coarse-grained units deposited in deep-sea fan systems. In this environment, deeper channels continuously cut through successive shale and sandstone bodies. The channels funnelled density currents into the basin, while also building levee deposits.

Turbidity currents travelled down the channels, and also overtopped the levees spilling across backslope areas. Think of it as a thoroughfare of motion by our softer sediments. 

The sequential sediment formations, from significantly coarse-grained sandstones and conglomerates to fine silts and shale units of the Nanaimo Group, are considered to be partly due to eustacy, but more significantly related to relative sea-level changes induced by regional tectonics in an active forearc setting.

The eustatic sea level is the distance from the centre of the earth to the sea surface. An increase of the eustatic sea-level can be generated by decreasing glaciation, increasing spreading rates of the mid-ocean ridges or more mid-oceanic ridges.

The Northumberland Formation is made up of a massive, dark-grey mudstone that is locally interlaminated and interbedded with siltstone and fine-grained sandstone. 

There are abundant calcium carbonate concretions, parallel and current ripple laminations, clastic dikes and folded layers due to slumping. 

In the Gulf Islands to the south, this formation has yielded abundant and diverse foraminifera, tiny single-celled organisms, members of a phylum of amoeboid protists, that tell us these marine paleodepths formed at 150-1200 metres below the ocean surface.

The more resistive Geoffrey Formation consists of thick-bedded sandstone and conglomerate. It is highly channelized, and some sandstone has exposed parallel and ripple laminations. The Spray Formation exposed on the east end of the island is a massive olive-grey mudstone with interlaminations of sandstone.

Furthest to the east, the youngest exposures on Hornby Island are from the Gabriola Formation, which outcrops on the eastern peninsula. 

This is again a thick-bedded and channelized sequence of conglomerates and massive sandstone with minor mudstone interbeds. South, in the Gulf Islands, this formation has contained ammonites, gastropods and pelecypods. Paleowater-depth from foraminiferal assemblages has been set at 200 m.

Katnick, D.C. and P.S. Mustard (2001): Geology of Denman and Hornby Islands, British Columbia (NTS 92F/7E, 10); British Columbia Geological Survey Branch, Geoscience Map 2001-3.

England, T.D.J. and R. N. Hiscott (1991): Upper Nanaimo Group and younger strata, outer Gulf Islands, southwestern British Columbia: in Current Research, Part E; Geological Survey of Canada, Paper 91-1E, p. 117-125.

Photo: Heidi Henderson aka the Fossil Huntress — Palaeo Sommelier / Explorer-in-Residence

TUSKED TITANS OF THE ARCTIC: WALRUS ᐊᐃᕕᖅ

A lazy walrus lounges on an ice floe, its massive, blubbery body shimmering under the low Arctic sun. 

With a deep, rumbling sigh, it shifts its weight and scratches an itch on its side—more out of habit than necessity. Life, for this marine titan, moves at the pace of the tides.

Odobenus rosmarus, the walrus is the only surviving member of the family Odobenidae, a once-diverse group of pinnipeds that includes extinct relatives such as Dusignathus and Pontolis. 

Fossil remains place their lineage back to the late Miocene, around 10–11 million years ago. Early odobenids first appeared in the North Pacific and were more varied than the tusked, bottom-feeding walrus we know today—some had shorter tusks or none at all, and many hunted fish rather than clams.

These ancient walruses belonged to a broader superfamily, the Pinnipedia, which also includes seals and sea lions. Genetic and fossil evidence suggests pinnipeds split from terrestrial carnivores roughly 25–30 million years ago, likely from bear-like ancestors that took to the water during the Oligocene. Odobenids evolved later, perfecting their specialization as suction feeders. 

Their powerful tongues can vacuum soft-bodied mollusks straight from their shells—a skill that defines modern walrus diets.

Today, walruses inhabit the icy Arctic and subarctic waters of the Northern Hemisphere, with two recognized subspecies: the Atlantic walrus, O. r. rosmarus, found in the Canadian Arctic and Greenland, and the Pacific walrus, O. r. divergens, ranging from the Bering Sea to the Chukchi Sea. They prefer shallow continental shelf regions where bivalves abound and haul out on sea ice or rocky shores in vast, noisy colonies.

Despite their ponderous appearance, walruses are powerful swimmers and social creatures with intricate communication and hierarchy systems. Their tusks—elongated canines present in both males and females—serve for dominance displays, hauling out, and defense. 

To Arctic peoples, walruses have long been vital for food, hides, and ivory, woven into traditional lifeways and mythology.

In Inuktitut, the word for walrus is “aiviq” (ᐊᐃᕕᖅ). It’s pronounced roughly eye-vik or ay-vik, depending on the dialect. The plural form is “aiviat” (ᐊᐃᕕᐊᑦ). The walrus, aiviq, holds deep cultural and spiritual importance in Inuit communities, long valued for its meat, ivory, and hide—vital resources for survival in the Arctic.

From Miocene shores to the modern polar ice, the walrus story is one of adaptation and endurance—a lineage that has survived shifting seas and ice ages, still scratching its ancient itch beneath the northern sun.