Wednesday, 2 September 2026
FOSSIL HUNTRESS PODCAST: DEAD SEXY SCIENCE
Close your eyes & fly with me as we head out together to explore Earth's rich history written in her rock. Travel to extraordinary places, sacred sites & unearth mysteries millions of years old on the Fossil Huntress Podcast.
This stream is for those who share an enduring passion for our world's hidden treasures, its wild places & want to uncover her beauty stone by stone.
This is the story of the making of our Earth and the many wonderful creatures who have called it home.
Join in the exploration of the fascinating science of paleontology — that lens that examines ancient animals, plants & ecosystems from wee single-celled organisms to big & mighty dinosaurs. Save the stream to your favorites to listen while you drive, head out fossil collecting or snuggle in for the night!
To listen now, visit: https://open.spotify.com/show/1hH1wpDFFIlYC9ZW5uTYVL
Wednesday, 25 February 2026
THE LOST SEA BENEATH THE PYRAMIDS: TETHYS
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| Tethys Ocean |
Stretching from what is now the Mediterranean to the Indian Ocean, the Tethys existed from the late Paleozoic through the early Cenozoic, roughly 250 to 50 million years ago.
The concept of this long-lost ocean was first proposed in 1893 by Austrian geologist Eduard Suess, one of the founders of modern geology. While studying the distribution of marine fossils in rocks found high in mountain ranges such as the Alps and Himalayas, Suess realized that these fossils—corals, ammonites, and foraminifera—must once have lived in a vast tropical sea.
His revolutionary conclusion: the mountains had been uplifted from the floor of an ancient ocean that no longer existed. He named this vanished sea the Tethys, after the Greek sea goddess and wife of Oceanus.
Evidence for the Tethys Ocean comes from both geology and fossil assemblages. Layers of marine limestone rich in Nummulites, ammonites, and other marine fossils are found across Europe, North Africa, and southern Asia—often thousands of meters above current sea level.
These rocks record an ocean teeming with life during the Mesozoic and early Cenozoic, later compressed and folded as the African, Indian, and Eurasian plates collided to form the Alps, the Himalayas, and the Zagros Mountains.
Its tropical lagoons once hosted coral reefs, sea urchins, mollusks, and the foraminifera that would later become Nummulites. As these tiny organisms lived, died, and settled onto the seafloor, their calcium carbonate shells accumulated in thick beds of lime mud. Over millions of years, these sediments hardened into the fossil-rich Eocene limestones that now form much of Egypt’s geology—including the very stone quarried for the pyramids of Giza.
Today, the remnants of the Tethys survive as the Mediterranean, Black, Caspian, and Aral Seas, but its story lives on in every fossil-bearing limestone block of the Great Pyramid—a geological time capsule of an ocean that vanished long before humankind emerged.
Sunday, 22 February 2026
LIMESTONE AND LIGHT: EGYPT BEFORE THE PHARAOHS
Long before kings rose and dynasties fell, before the Nile carved its fertile ribbon through desert sands, the foundations of Egypt were being forged deep within the Earth.
Egypt, officially the Arab Republic of Egypt, occupies the northeastern corner of Africa, with the Sinai Peninsula extending beyond the continental boundary into Asia.
It is bordered by the Gaza Strip and Israel to the northeast, the Gulf of Aqaba and Red Sea to the east, Sudan to the south, and Libya to the west. To the north, the Mediterranean Sea opens toward Europe—Greece, Cyprus, and Turkey—while across the Red Sea lies Saudi Arabia and, beyond the Gulf of Aqaba, Jordan.
To understand Egypt’s true antiquity, one must look not to its monuments, but to its bedrock.This striking karst landscape, weathered by time and the desert’s relentless breath, tells of ancient seas, tectonic upheaval, and long-vanished ecosystems.
Once the breadbasket of the Pharaohs and now scarred by oil pipelines and rusted trucks, this land has seen empires rise and vanish. Beneath the sand and relics of human ambition lies a deeper record—a geological archive of oceans, volcanoes, and shifting continents.
The story begins deep in time, during the Archaean Eon, when the Earth’s crust was first beginning to cool, between 4 and 2.5 billion years ago. The rocks from this period, preserved as ancient inliers in Egypt’s Western Desert, are among the oldest on the African continent. Later, during the Proterozoic, when oxygen was only just beginning to fill the planet’s atmosphere, new rocks were laid down in the Eastern Desert—igneous and metamorphic foundations formed when bacteria and marine algae were the dominant life on Earth.
These ancient crystalline roots form the basement complex upon which Egypt’s later history—both geological and human—would unfold.Still younger Cenozoic sediments record the rhythmic rise and fall of global sea levels—cycles of transgression and regression that alternately drowned and exposed the land.
Each layer marks a new chapter in the story of water, time, and transformation. It is from these Cenozoic limestones, formed some 50 million years ago in the shallow seas of the Eocene epoch, that the stones of the Great Pyramids were quarried. Composed largely of the fossilized remains of ancient marine organisms—especially the large, coin-like foraminifera known as Nummulites—these rocks are both geological and biological archives.
Every pyramid block is built from the remains of an ancient ocean, each fossilized shell a fragment of life that once thrived beneath the waters of the long-vanished Tethys Sea.
The pyramids of Giza, with their luminous exteriors of fine-grained white limestone from the quarries of Tura, stand as enduring testaments to human ingenuity and Earth’s deep-time creativity. They are monuments raised from the bones of microscopic life, shaped by hands that would have been surprised to know they were building with the remnants of a vanished world.
From the glittering deserts of Giza to the fossil beds of the Fayum, Egypt’s landscapes tell stories written in stone—of ancient oceans, shifting continents, and the eternal dialogue between life, death, and time. The Great Pyramid may have been built for eternity, but its foundations were set in motion eons before humanity’s first spark.
Beneath the gaze of the Sphinx and the shadow of Khufu’s towering pyramid, the story of Egypt’s limestone deepens. Those pale, gleaming blocks that once caught the desert sun are more than architectural marvels—they are the fossilized remains of an ancient sea, built from the microscopic shells of creatures that lived and died millions of years before the first pharaoh dreamed of eternity.
It is here, in the very stone of the Great Pyramid, that Egypt’s human history meets Earth’s geological past.
Thursday, 15 January 2026
BRYCE CANYON NATIONAL PARK
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| Bryce Canyon National Park |
The hoodoos rise by the tens of thousands, slender spires and stacked pinnacles arranged in amphitheatres that curve like giant bowls scooped from the Paunsaugunt Plateau.
Seen from the air, their geometry becomes mesmerizing: rows and clusters, corridors and cul-de-sacs, each column subtly different, each telling its own long, patient story.
These improbable forms are the product of relentless, delicate violence. Bryce’s hoodoos are sculpted from the Claron Formation, a sequence of sedimentary rocks laid down between about 50 and 35 million years ago, when this high plateau was a landscape of lakes, rivers, and floodplains.
Limestone, mudstone, and siltstone stacked layer upon layer, later lifted skyward as the Colorado Plateau rose. What followed was not a single dramatic event, but millions of freeze–thaw cycles—water seeping into cracks by day, freezing and expanding by night—paired with rain, snowmelt, and gravity’s quiet insistence.
From the aerial view, colour tells the chemistry of the stone. Iron oxides stain the hoodoos in fiery reds and oranges, while manganese adds purples and lavenders that deepen as shadows lengthen.
Pale caps of harder rock perch atop many spires like improbable hats, protecting the softer stone beneath and allowing the columns to stand long enough to earn their fantastical shapes. Where caps fall, hoodoos soon follow—proof that this is a living, changing landscape, not a static monument.
Light is the final sculptor. At sunrise, the amphitheatres ignite, each spire rimmed with gold. By midday, the forms sharpen and flatten, revealing the intricate fluting etched into their sides.
As evening approaches, shadows flood the basins, pooling between the towers until the hoodoos seem to float, suspended in a sea of dusk. From above, those shadows trace the park’s hidden architecture, mapping the slow choreography of erosion.
Monday, 1 December 2025
WINTER LIGHT: NUSFJORD, LOFOTEN
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| Nusfjord, Lofoten, Norway |
Wooden rorbuer—those classic red fishermen’s cabins—hug the harbour, their walls creaking softly in the cold.
A sharp, salty breeze drifts through the village, carrying with it the unmistakable tang of drying cod—rich, briny, and threaded with the cold bite of the Arctic sea.
The air is crisp with the scent of the sea and cod drying on wooden racks, rows of fish stiff as boards in the Arctic wind.
Gulls wheel overhead, their cries echoing off the fjord walls, while beneath the surface, the North Atlantic swirls dark and ancient, shaped by ice, fire, and time. The gulls know a meal is at hand if they can catch you unaware.
Nusfjord, one of Norway’s best-preserved fishing villages, tells a story of the rugged people who live here, the sea and its bounty but also a great geological drama. The stone on which it rests—gneiss and schist—was forged nearly 3 billion years ago, among the oldest rocks in Europe. These are remnants of Earth’s early continental crust, once buried miles below the surface.
Over eons, tectonic collisions folded, pressed, and recrystallized them, transforming simple sediments into the gleaming banded rocks you see today.
The rugged backdrop of the Lofoten Islands owes its shape to the Caledonian Orogeny, a mountain-building event that occurred some 400 million years ago, when the ancient continents of Laurentia and Baltica collided. The pressures of that collision thrust deep crustal rocks upward, forming mountains that once rivaled the Himalayas.
Time, glaciers, and relentless coastal erosion have since sculpted those peaks into the steep, knife-edged forms that now cradle Nusfjord like the walls of a stony amphitheatre.
During the last Ice Age, glaciers carved deep U-shaped valleys through these hard rocks, leaving behind the fjords we know today. As the ice retreated roughly 10,000 years ago, the sea flooded these valleys, creating a perfect natural harbour—sheltered from storms, yet open to the rich fishing grounds of the Norwegian Sea. It was this unique geography that first drew Norse fishermen here more than a thousand years ago, setting the stage for Nusfjord’s long relationship with cod.
While the fish still hang to dry each winter—a ritual unchanged for centuries—the rocks whisper stories of an even older world. Every granite ridge and polished outcrop is a page from the deep-time chronicle of our planet. It is icy poetry by all accounts and one of my favourite parts of the world.
In Nusfjord, geology and human history intertwine as seamlessly as sea and sky: a place where the bones of the Earth rise through ice and salt air, and the past is written in both stone and scales.
Friday, 21 November 2025
TRACKING DIATRYMA: FOSSIL FOOTPRINTS IN THE CHUCKANUT FORMATION
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| Diatryma Restoration & Size Comparison |
Beneath today’s scenic Chuckanut Drive lies a story written in stone — layer upon layer of siltstone, sandstone, mudstone, and conglomerate that make up the Chuckanut Formation, a fossil-rich archive of ancient swamps and floodplains.
Imagine stepping into that Eocene world. The air is heavy with humidity, thick with the scent of wet earth and resin. Towering dawn redwoods (Metasequoia) rise above a dense understorey of ferns, laurels, and figs.
Glyptostrobus, the Chinese swamp cypress, forms stands along the riverbanks, its knees jutting from the warm, tea-colored water.
Palms sway beside oxbow lakes where turtles and crocodilians bask on fallen logs. The landscape would look more at home in modern-day Louisiana or Belize than in the shadow of the North Cascades.
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| Diatryma Tracks, Washington State |
Rivers carried eroded sediments from the rising ancestral Cascades into broad, lowland deltas, where they built up thick beds of sand and mud. Over millions of years, those sediments hardened into rock, entombing the life that once flourished there.
Among the most remarkable of the Chuckanut fossils are footprints — delicate, fleeting impressions that speak to the creatures that wandered through this swampy paradise. One of these was Diatryma, Gastornis, a colossal flightless bird that could reach nearly nine feet tall.
With massive legs and a deep, powerful beak, Diatryma was a relic of an ancient avian lineage that arose soon after the age of dinosaurs. They would have been most impressive to see, though they would likely chase you down for a wee taste!
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| Gastornis giganteus |
Though once imagined as fearsome predators, new evidence suggests they were likely omnivores or even herbivores, using their beaks to crack seeds, fruits, or tough vegetation.
Diatryma shared the Eocene floodplains with a cast of strange and wonderful mammals. There were Pantodonts and Dinoceratans — heavy-bodied, blunt-footed herbivores with a primitive charm, precursors to later hoofed mammals.
Small early horses trotted through the marshy margins, while shorebirds and amphibians left fleeting traces in the soft mud. Above it all, ancient dragonflies and early bats flitted through the dense canopy.
The Chuckanut Formation preserves this bygone world in exquisite detail — not as bones and teeth, but as fossil leaves, tracks, and impressions, the whispers of a time when Washington was a tropical delta at the edge of a newborn continent.
Today, when you drive along Chuckanut’s winding road or hike its rocky bluffs, you are traveling through the ghost of an Eocene bayou — a landscape alive with the echoes of towering trees, swamp-dwelling beasts, and the thunderous stride of the mighty Diatryma.
Image Credit: Lead Image By Tim Bertelink - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=49203812 edited by Fossil Huntress
Image Credit: Diatryma Restoration and Size Comparison: Gastornis giganteus: By Vince Smith from London, United Kingdom - Diatryma, a large flightless bird from the Eocene of WyomingUploaded by FunkMonk, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=28298676
Thursday, 20 November 2025
ECHOES IN STONE: WASHINGTON GEOLOGY
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| Washington State Forest |
It was two drifting islands — fragments of a wandering continent slowly inching their way west across the ancient ocean.
They were vagabonds, carried on tectonic currents until, at last, they collided with the North American continent and made themselves at home.
That restless motion has never stopped. The land still breathes — slow, tectonic breaths that subtly reshape the surface of the Pacific Northwest. Every so often, that breath shudders.
We feel it in an earthquake, a reminder that the forces that built the land are still at work, deep below our feet. The great plates grind and twist, pushing mountains skyward and sliding California ever so slightly toward the North Pole. Hello, Baja-BC.
It’s this long, dynamic dance — the great continental waltz — that sculpted the ridges, folded valleys, and mountain walls we see today. And it’s also what preserved an ancient world beneath our boots: the subtropical swamps and deltas of the Chuckanut Formation, a geological tapestry stretching some 3,000 metres thick along Chuckanut Drive near Bellingham.
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| Islands Riding Tectonic Plates |
The upper layers push into the early Eocene, a time when Earth was warmer and wetter than it has been since. Imagine, if you can, not the misty evergreens and glacial peaks of today, but a subtropical floodplain, dense with palms, ferns, and broad-leaved trees.
Picture the bayou country of the Lower Mississippi, but stretching across what is now the Pacific Northwest.
This was a land of life. Ancient trees towered overhead. Vines tangled in the swamp air. The Chuckanut flora tells us of a greenhouse Earth — plants whose modern cousins thrive in Central America and southern Mexico flourished here, under the same sun that today glints off Mount Baker’s glaciers.
Every fallen branch, every leaf buried in fine silt became part of the rock record, sealing in the whispers of an ancient climate: its humidity, rainfall, and heat.
But the plants are only part of the story. In rare and beautiful moments, the Chuckanut Formation captures motion — the fleeting steps of animals caught forever in stone. These are the Sumas Eocene trackways, discovered after landslides near Sumas in 2009.
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| The Ancient Bayou of Washington State |
Together, they sketch a portrait of life 50 million years ago: herds and flocks wandering the muddy margins of rivers, where soft sediment briefly held their weight before drying, hardening, and turning to stone.
One of the most striking finds is that of a delicate shorebird trackway, each print barely larger than a thumbprint, pressed into what was once the bank of a lazy river.
It’s joined by faint impressions from an early horse-like mammal and, in other sites such as Racehorse Creek, the formidable three-toed stamp of Diatryma — a flightless bird taller than a man, and every bit as formidable as its dinosaurian cousins.
These fossil trackways are precious not just for their rarity but for what they reveal: a moment of life, caught mid-step. Unlike bones, which tell us who lived here, tracks tell us how they lived — where they walked, how they moved, even how they interacted. They are the fossilized choreography of an ancient ecosystem, preserved in mud and time.
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| Mt. Baker, Washington |
There, under controlled light and the quiet reverence of display cases, visitors can stand face-to-face with the footprints of creatures that trod the Pacific Northwest long before the Cascades rose above the horizon.
The landscape along Chuckanut Drive may look serene now — the sandstone cliffs honeycombed by ferns, the sea glittering beyond.
But beneath every weathered ledge and outcrop lies a record of turbulence and transformation: continents colliding, mountains rising, rivers changing course, and life adapting in the wake.
This is land that is now forests and tides, but was once swamps and subtropical rain. The fossils remind us that the ground beneath us has always been moving, always changing, and always keeping its secrets — until the rock, split open by time or by curiosity, whispers them back into the light.
Wednesday, 12 November 2025
THE LOST SEA BENEATH THE PYRAMIDS: THE TETHYS OCEAN
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| Tethys Ocean |
Stretching from what is now the Mediterranean to the Indian Ocean, the Tethys existed from the late Paleozoic through the early Cenozoic, roughly 250 to 50 million years ago.
The concept of this long-lost ocean was first proposed in 1893 by Austrian geologist Eduard Suess, one of the founders of modern geology. While studying the distribution of marine fossils in rocks found high in mountain ranges such as the Alps and Himalayas, Suess realized that these fossils—corals, ammonites, and foraminifera—must once have lived in a vast tropical sea.
His revolutionary conclusion: the mountains had been uplifted from the floor of an ancient ocean that no longer existed. He named this vanished sea the Tethys, after the Greek sea goddess and wife of Oceanus.
Evidence for the Tethys Ocean comes from both geology and fossil assemblages. Layers of marine limestone rich in Nummulites, ammonites, and other marine fossils are found across Europe, North Africa, and southern Asia—often thousands of meters above current sea level.
These rocks record an ocean teeming with life during the Mesozoic and early Cenozoic, later compressed and folded as the African, Indian, and Eurasian plates collided to form the Alps, the Himalayas, and the Zagros Mountains.
Its tropical lagoons once hosted coral reefs, sea urchins, mollusks, and the foraminifera that would later become Nummulites. As these tiny organisms lived, died, and settled onto the seafloor, their calcium carbonate shells accumulated in thick beds of lime mud. Over millions of years, these sediments hardened into the fossil-rich Eocene limestones that now form much of Egypt’s geology—including the very stone quarried for the pyramids of Giza.
Today, the remnants of the Tethys survive as the Mediterranean, Black, Caspian, and Aral Seas, but its story lives on in every fossil-bearing limestone block of the Great Pyramid—a geological time capsule of an ocean that vanished long before humankind emerged.
Sunday, 9 November 2025
LIMESTONE AND LIGHT: EGYPT BEFORE THE PHARAOHS
Long before kings rose and dynasties fell, before the Nile carved its fertile ribbon through desert sands, the foundations of Egypt were being forged deep within the Earth.
Egypt, officially the Arab Republic of Egypt, occupies the northeastern corner of Africa, with the Sinai Peninsula extending beyond the continental boundary into Asia.
It is bordered by the Gaza Strip and Israel to the northeast, the Gulf of Aqaba and Red Sea to the east, Sudan to the south, and Libya to the west. To the north, the Mediterranean Sea opens toward Europe—Greece, Cyprus, and Turkey—while across the Red Sea lies Saudi Arabia and, beyond the Gulf of Aqaba, Jordan.
To understand Egypt’s true antiquity, one must look not to its monuments, but to its bedrock.This striking karst landscape, weathered by time and the desert’s relentless breath, tells of ancient seas, tectonic upheaval, and long-vanished ecosystems.
Once the breadbasket of the Pharaohs and now scarred by oil pipelines and rusted trucks, this land has seen empires rise and vanish. Beneath the sand and relics of human ambition lies a deeper record—a geological archive of oceans, volcanoes, and shifting continents.
The story begins deep in time, during the Archaean Eon, when the Earth’s crust was first beginning to cool, between 4 and 2.5 billion years ago. The rocks from this period, preserved as ancient inliers in Egypt’s Western Desert, are among the oldest on the African continent. Later, during the Proterozoic, when oxygen was only just beginning to fill the planet’s atmosphere, new rocks were laid down in the Eastern Desert—igneous and metamorphic foundations formed when bacteria and marine algae were the dominant life on Earth.
These ancient crystalline roots form the basement complex upon which Egypt’s later history—both geological and human—would unfold.Still younger Cenozoic sediments record the rhythmic rise and fall of global sea levels—cycles of transgression and regression that alternately drowned and exposed the land.
Each layer marks a new chapter in the story of water, time, and transformation. It is from these Cenozoic limestones, formed some 50 million years ago in the shallow seas of the Eocene epoch, that the stones of the Great Pyramids were quarried. Composed largely of the fossilized remains of ancient marine organisms—especially the large, coin-like foraminifera known as Nummulites—these rocks are both geological and biological archives.
Every pyramid block is built from the remains of an ancient ocean, each fossilized shell a fragment of life that once thrived beneath the waters of the long-vanished Tethys Sea.
The pyramids of Giza, with their luminous exteriors of fine-grained white limestone from the quarries of Tura, stand as enduring testaments to human ingenuity and Earth’s deep-time creativity. They are monuments raised from the bones of microscopic life, shaped by hands that would have been surprised to know they were building with the remnants of a vanished world.
From the glittering deserts of Giza to the fossil beds of the Fayum, Egypt’s landscapes tell stories written in stone—of ancient oceans, shifting continents, and the eternal dialogue between life, death, and time. The Great Pyramid may have been built for eternity, but its foundations were set in motion eons before humanity’s first spark.
Beneath the gaze of the Sphinx and the shadow of Khufu’s towering pyramid, the story of Egypt’s limestone deepens. Those pale, gleaming blocks that once caught the desert sun are more than architectural marvels—they are the fossilized remains of an ancient sea, built from the microscopic shells of creatures that lived and died millions of years before the first pharaoh dreamed of eternity.
It is here, in the very stone of the Great Pyramid, that Egypt’s human history meets Earth’s geological past.
Monday, 27 October 2025
WILD EQUINE BEAUTY: ICELANDIC HORSES
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| Icelandic Horses |
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| Icelandic Horses |
Saturday, 25 October 2025
ROADSIDE FOSSILS: TRIASSIC PAPER CLAMS FROM PINE PASS
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| Triassic Paper clams, Pardonet Formation |
Here, in outcrops of the Pardonet Formation, the remains of once-living bivalves called paper clams—or “flat clams”—paint a vivid picture of life in the Late Triassic seas.
During the Triassic, roughly 237–201 million years ago, these delicate-shelled bivalves of the genus Moinotis, specifically Moinotis subcircularis, thrived in shallow marine environments.
Their thin, flattened shells resemble wafer-like sheets, earning them the common name “paper clams.”
Despite their fragile appearance, they were ecologically tough, colonizing vast seafloor regions after the Permian-Triassic mass extinction—Earth’s most catastrophic biodiversity crisis. In the wake of devastation, paper clams became pioneers in new marine ecosystems, spreading widely across the Triassic world.
At Pine Pass, the Pardonet Formation captures this resilience in stone. The strata—composed mainly of silty shales and fine-grained sandstones—represent an ancient seabed deposited along the western margin of Pangea. These rocks are part of the larger Western Canada Sedimentary Basin and are well known for their rich fossil assemblages, including ammonoids, conodonts, and marine reptiles. Yet, among these Triassic relics, it’s the paper clams that often dominate.
A short scramble up the rocky slope near the highway reveals bedding planes glittering with thousands of tiny, overlapping shells. They lie perfectly preserved, their paper-thin forms cemented into the matrix as though frozen in a whisper of time. Each shell records a pulse of ancient life in a warm, shallow sea teeming with invertebrates.
Our field stop at Pine Pass was a spontaneous detour en route to a paleontological conference in nearby Tumbler Ridge—a region equally famed for its dinosaur tracks and marine fossils. What was meant to be a quick roadside break became a fossil feast.
Within minutes, we were crouched among the rocks, gently tracing our fingers over Moinotis subcircularis—delicate, symmetrical, and as hauntingly beautiful as the day they settled on the Triassic seafloor.
Friday, 24 October 2025
THE FOSSIL CLIFFS OF JOGGINS, EASTERN CANADA
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| Pennsylvanian Coal Age Ecosystem, 300-Million-Years-Old |
References & further reading:
Joggins Fossil Cliffs: https://jogginsfossilcliffs.net/cliffs/history/
Image: Hylonomus lyelli, Una ricostruzione di ilonomo by Matteo De Stefano/MUSEThis file was uploaded by MUSE - Science Museum of Trento in cooperation with Wikimedia Italia., CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=48143186
Image: Arthropleura: Par Tim Bertelink — Travail personnel, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=48915156
Joggins Map: Joggins Fossil Cliffs: https://jogginsfossilcliffs.net/cliffs/history/
Friday, 3 October 2025
HAWAI'I: ISLANDS BORN OF FIRE
A vast blue desert stretching farther than the eye could see. But beneath that endless water, far below the waves, the Earth was stirring.
Deep inside our planet lies a restless heart, a molten engine. It churns and pulses, and sometimes, it leaks upward through the skin of the world.
In one special place beneath the Pacific Plate, a hot spot—a plume of heat rising from the mantle—began to melt rock, making it buoyant and eager to break free.
Imagine molten stone, glowing red-orange, pushing upward for thousands of years until—at last—it broke through the ocean floor. The sea hissed and boiled as lava met saltwater. Bit by bit, eruption after eruption, a new land began to rise from the deep. That was the beginning of the Hawai'ian Islands.
But here’s the magic, Hawai'i is not a single island, but a story told in chapters, one after another, spread across millions of years. The Pacific Plate is always moving—slowly, but steadily, like a great raft drifting northwest. The hot spot itself doesn’t move. It’s fixed, like a candle’s flame. So as the plate slides across it, new islands are born in sequence, while the old ones drift away, cooling, eroding, and eventually sinking back beneath the waves.
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| Aerial View of Kaua'i |
Kaua‘i, the eldest, is weathered and softened, its sharp volcanic ridges worn into velvet valleys. I've shared an aerial view here of Kaua'i showing its lush covering of forests and dramatic slopes.
O‘ahu, Maui, Moloka‘i—all follow, each younger, each shaped by fire and rain.
And finally, the youngest, Hawai‘i Island—often called the Big Island—still burns with creation. Its great volcanoes, Mauna Loa and Kīlauea, continue to pour molten rock into the sea, adding new land even as we speak.
If you were to trace this island chain beneath the waves, you’d find it stretching far, far beyond the horizon. More than 130 undersea volcanoes, some worn down to nothing but lonely seamounts, extend in a long arc that reaches all the way to the Aleutians near Alaska. Together, they form the Hawai'ian–Emperor Seamount Chain—a testament to 80 million years of volcanic storytelling.
But Hawai'i is not just fire—it is also shaped by water and wind. Once the lava cools, the islands begin a second life. Rain falls, carving valleys and canyons. Trade winds sculpt cliffs and carry seeds. Plants take root in the fresh, black soil, and birds bring new life in their feathers. Over time, forests rise where once there was only ash. Coral reefs grow along the shores, ringing the islands in color and light.
Imagine lying back now on a beach of fine sand, still warm from the day’s sun. Behind you, the green slopes of ancient volcanoes rise, and before you, the sea glitters in moonlight.The air smells of salt and flowers, plumeria drifting on the breeze. The very ground beneath you is alive with the heartbeat of the Earth, still creating, still dreaming.
And just like all stories, Hawai'i’s will continue to unfold. South of the Big Island, deep under the ocean, another volcano is already forming. Its name is Lō‘ihi.
One day, perhaps tens of thousands of years from now, it will breach the surface, joining the island chain. Children not yet born will stand on its shores, and perhaps they will listen to stories of how their land came to be—just as you are imagining it now. I know that two of my dear nieces, M & M, are doing just that and I think of them and the beautiful shores they call home.
Friday, 18 July 2025
SPIRALING BEAUTY: AMMONITES AS INDEX FOSSILS
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| Argonauticeras besairei, Collection of José Juárez Ruiz. |
Ammonites were predatory, squid-like creatures that lived inside coil-shaped shells.
Like other cephalopods, ammonites had sharp, beak-like jaws inside a ring of squid-like tentacles that extended from their shells. They used these tentacles to snare prey, — plankton, vegetation, fish and crustaceans — similar to the way a squid or octopus hunt today.
Catching a fish with your hands is no easy feat, as I'm sure you know. But the Ammonites were skilled and successful hunters. They caught their prey while swimming and floating in the water column. Within their shells, they had a number of chambers, called septa, filled with gas or fluid that were interconnected by a wee air tube. By pushing air in or out, they were able to control their buoyancy in the water column.
They lived in the last chamber of their shells, continuously building new shell material as they grew. As each new chamber was added, the squid-like body of the ammonite would move down to occupy the final outside chamber.
They were a group of extinct marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs, commonly referred to as ammonites, are more closely related to living coleoids — octopuses, squid, and cuttlefish) than they are to shelled nautiloids such as the living Nautilus species.
The Ammonoidea can be divided into six orders:
- Agoniatitida, Lower Devonian - Middle Devonian
- Clymeniida, Upper Devonian
- Goniatitida, Middle Devonian - Upper Permian
- Prolecanitida, Upper Devonian - Upper Triassic
- Ceratitida, Upper Permian - Upper Triassic
- Ammonitida, Lower Jurassic - Upper Cretaceous
If they are ceratitic with lobes that have subdivided tips; giving them a saw-toothed appearance and rounded undivided saddles, they are likely Triassic. For some lovely Triassic ammonites, take a look at the specimens that come out of Hallstatt, Austria and from the outcrops in the Humboldt Mountains of Nevada.
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| Hoplites bennettiana (Sowby, 1826). |
One of my favourite Cretaceous ammonites is the ammonite, Hoplites bennettiana (Sowby, 1826). This beauty is from Albian deposits near Carrière de Courcelles, Villemoyenne, near la région de Troyes (Aube) Champagne in northeastern France.
At the time that this fellow was swimming in our oceans, ankylosaurs were strolling about Mongolia and stomping through the foliage in Utah, Kansas and Texas. Bony fish were swimming over what would become the strata making up Canada, the Czech Republic and Australia. Cartilaginous fish were prowling the western interior seaway of North America and a strange extinct herbivorous mammal, Eobaatar, was snuffling through Mongolia, Spain and England.
In some classifications, these are left as suborders, included in only three orders: Goniatitida, Ceratitida, and Ammonitida. Once you get to know them, ammonites in their various shapes and suturing patterns make it much easier to date an ammonite and the rock formation where is was found at a glance.
Ammonites first appeared about 240 million years ago, though they descended from straight-shelled cephalopods called bacrites that date back to the Devonian, about 415 million years ago, and the last species vanished in the Cretaceous–Paleogene extinction event.
They were prolific breeders that evolved rapidly. If you could cast a fishing line into our ancient seas, it is likely that you would hook an ammonite, not a fish. They were prolific back in the day, living (and sometimes dying) in schools in oceans around the globe. We find ammonite fossils (and plenty of them) in sedimentary rock from all over the world.
In some cases, we find rock beds where we can see evidence of a new species that evolved, lived and died out in such a short time span that we can walk through time, following the course of evolution using ammonites as a window into the past.
For this reason, they make excellent index fossils. An index fossil is a species that allows us to link a particular rock formation, layered in time with a particular species or genus found there. Generally, deeper is older, so we use the sedimentary layers rock to match up to specific geologic time periods, rather the way we use tree-rings to date trees. A handy way to compare fossils and date strata across the globe.
https://www.nature.com/articles/srep33689?fbclid=IwAR1BhBrDqhv8LDjqF60EXdfLR7wPE4zDivwGORTUEgCd2GghD5W7KOfg6Co#citeas
Photo: Hoplites Bennettiana from near Troyes, France. Collection de Christophe Marot
Saturday, 26 April 2025
ETHELDRED BENETT OF WILTSHIRE: FIRST FEMALE GEOLOGIST
She was also credited with being a man — the Natural History Society of Moscow awarded her membership as Master Etheldredus Benett in 1836. The confusion over her name (it did sound masculine) came again with the bestowing of a Doctorate of Civil Law from Tsar Nicholas I.
The Tsar had read Sowerby's Mineral Conchology, a major fossil reference work which contained the second-highest number of contributed fossils of the day, many of the best quality available at the time. Forty-one of those specimens were credited to Benett. Between her name and this wonderous contribution to a growing science, the Russian Tsar awarded the Doctorate to what he believed was a young male scientist on the rise.
Benett took these honours (and social blunders) with grace. She devoted her life to collecting and studying fossils from the southwest of England, amassing an impressive personal collection she openly shared with geologist friends, colleagues and visitors to her home. Her specialty was fossils from the Middle Cretaceous, Upper Greensand in the Vale of Wardour — a valley in the county of Wiltshire near the River Nadder.
Etheldred was a local Wiltshire girl. Born Etheldred Benett on 22 July 1775 at Pyt House, Tisbury, Wiltshire, the eldest daughter of the local squire Thomas Benett. Etheldred's interest was cultivated by the botanist Aylmer Bourke Lambert (1761-1842), a founding member of the Linnean Society.
Aylmer kindled an interest in natural history in both of Benett's daughters. Etheldred had a great fondness in geology, stratigraphy and all things paleo, whilst her sister concentrated on botany. Etheldred had a distinct advantage over her near contemporary, the working-class Mary Anning (1799-1847), in that Benett was a woman of independent wealth who never married — and didn't need to — who could pursue the acquisition and study of fossils for her own interest.
While Anning was the marine reptile darling of the age, she was also greatly hindered by her finances. "She sells, seashells by the seashore..." while chanted in a playful spirit today, was not meant kindly at the time. Aylmer's encouragement emboldened Etheldred to go into the field to collect for herself — and collect she did. Profusely.
Benett’s contribution to the early history of Wiltshire geology is significant. She corresponded extensively with the coterie of gentlemen scientists of the day — Gideon Mantell, William Buckland, James Sowerby, George Bellas Greenough and, Samuel Woodward. She also consorted with the lay folk and had an ongoing correspondence with William Smith, whose stratigraphy work had made a favourable impression on her brother-in-law, Aylmer.
Her collections and collaboration with geologists of the day were instrumental in helping to form the field of geology as a science. One colleague and friend, Gideon Mantell, British physician, geologist and palaeontologist, who discovered four of the five genera of dinosaurs and Iguanadon, was so inspired by Benett's work he named this Cretaceous ammonite after her — Hoplites bennettiana.
Benett's fossil assemblage was a valuable resource for her contemporaries and remains so today. It contains thousands of Jurassic and Cretaceous fossil specimens from the Wiltshire area and the Dorset Coast, including a myriad of first-recorded finds. The scientific name of every taxon is usually based on one particular specimen, or in some cases multiple specimens. Many of the specimens she collected serve as the Type Specimen for new species.
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| Fossil Sponge, Polypothecia quadriloba, Warminster, Wiltshire |
Alas, no one took up the helm — those interested were busy with other pursuits (or passed away) and others were less than enthusiastic or never seemed to get around to it.
To ensure the knowledge was shared in a timely fashion, she finally wrote them up and published them herself. You can read her findings in her publication, ‘A Catalogue of Organic Remains of the County of Wiltshire’ (1831), where she shares observations on the fossil sponge specimens and other invert goodies from the outcrops west of town.
She shared her ideas freely and donated many specimens to local museums. It was through her exchange of observations, new ideas and open sharing of fossils with Gideon Mantell and others that a clearer understanding of the Lower Cretaceous sedimentary rocks of Southern England was gained.
In many ways, Mantell was drawn to Benett as his ideas went against the majority opinion. At a time when marine reptiles were dominating scientific discoveries and discussions, he pushed the view that dinosaurs were terrestrial, not amphibious, and sometimes bipedal. Mantell's life's work established the now-familiar idea that the Age of Reptiles preceded the Age of Mammals. Mantell kept a journal from 1819-1852, that remained unpublished until 1940 when E. Cecil Curwen published an abridged version. (Oxford University Press 1940). John A. Cooper, Royal Pavilion and Museums, Brighton and Hove, published the work in its entirety in 2010.
I was elated to get a copy, both to untangle the history of the time and to better learn about the relationship between Mantell and Benett. So much of our geologic past has been revealed since Mantell's first entry two hundred years ago. The first encounter we share with the two of them is a short note from March 8, 1819. "This morning I received a letter from Miss Bennett of Norton House near Warminster Wilts, informing me of her having sent a packet of fossils for me, to the Waggon Office..." The diary records his life, but also the social interactions of the day and the small connected community of the scientific social elite. It is a delight!
Though a woman in a newly evolving field, her work, dedication and ideas were recognized and appreciated by her colleagues. Gideon Mantell described her as, "a lady of great talent and indefatigable research," whilst the Sowerbys noted her, "labours in the pursuit of geological information have been as useful as they have been incessant."
Benett produced the first measured sections of the Upper Chicksgrove quarry near Tisbury in 1819, published and shared with local colleagues as, "the measure of different beds of stone in Chicksgrove Quarry in the Parish of Tisbury.” The stratigraphic section was later published by naturalist James Sowerby without her knowledge. Her research contradicted many of Sowerby’s conclusions.
She wrote and privately published a monograph in 1831, containing many of her drawings and sketches of molluscs and sponges. Her work included sketches of the fossil Alcyonia (1816) from the Green Sand Formation at Warminster Common and the immediate vicinity of Warminster in Wiltshire.
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| Echinoids and Bivalves. Collection of Etheldred Benett (1775-1845) |
If you'd like to read a lovely tale on William's work, check out the Map that Changed the World: William Smith and the Birth of Modern Geology by Simon Winchester. It narrates the intellectual context of the time, the development of Smith's ideas and how they contributed to the theory of evolution and more generally to a dawning realization of the true age of the earth.
The book describes the social, economic or industrial context for Smith's insights and work, such as the importance of coal mining and the transport of coal by means of canals, both of which were a stimulus to the study of geology and the means whereby Smith supported his research. Benett debated many of the ideas Smith put forward. She was luckier than Smith financially, coming from a wealthy family, a financial perk that allowed her the freedom to add fossils to her curiosity cabinet at will.
Most of her impressive collection was assumed lost in the early 20th century. It was later found and purchased by an American, Thomas Bellerby Wilson, who donated it to the Academy of Natural Sciences of Philadelphia. Small parts of it made their way into British museums, including the Leeds City Museum, London, Bristol and to the University of St. Petersburg. These collections contain many type specimens and some of the very first fossils found — some with the soft tissues preserved. When Benett died in 1845, it was Mantell who penned her obituary for the London Geological Journal.
In 1989, almost a hundred and fifty years after her death, a review of her collection had Arthur Bogen and Hugh Torrens remark that her work has significantly impacted our modern understanding of Porifera, Coelenterata, Echinodermata, and the molluscan classes, Cephalopoda, Gastropoda, and Bivalvia. A worthy legacy, indeed.
Her renown lives on through her collections, her collaborations and through the beautiful 110 million-year-old ammonite you see here, Hoplites bennettiana. The lovely example you see here is in the collection of the deeply awesome Christophe Marot.
Spamer, Earle E.; Bogan, Arthur E.; Torrens, Hugh S. (1989). "Recovery of the Etheldred Benett Collection of fossils mostly from Jurassic-Cretaceous strata of Wiltshire, England, analysis of the taxonomic nomenclature of Benett (1831), and notes and figures of type specimens contained in the collection". Proceedings of the Academy of Natural Sciences of Philadelphia. 141. pp. 115–180. JSTOR 4064955.
Torrens, H. S.; Benamy, Elana; Daeschler, E.; Spamer, E.; Bogan, A. (2000). "Etheldred Benett of Wiltshire, England, the First Lady Geologist: Her Fossil Collection in the Academy of Natural Sciences of Philadelphia, and the Rediscovery of "Lost" Specimens of Jurassic Trigoniidae (Mollusca: Bivalvia) with Their Soft Anatomy Preserved.". Proceedings of the Academy of Natural Sciences of Philadelphia. 150. pp. 59–123. JSTOR 4064955.
Photo credit: Fossils from Wiltshire. In the foreground are three examples of the echinoid, Cidaris crenularis, from Calne, a town in Wiltshire, southwestern England, with bivalves behind. Caroline Lam, Archivist at the Geological Society, London, UK. http://britgeodata.blogspot.com/2016/03/etheldred-benett-first-female-geologist_30.html
Photo credit: Fossil sponges Polypothecia quadriloba, from Warminster, Wiltshire. The genus labels are Benett’s, as is the handwriting indicating the species. The small number, 20812, is the Society’s original accession label from which we can tell that the specimen was received in April 1824. The tablet onto which the fossils were glued is from the Society’s old Museum.
Wednesday, 9 April 2025
EXPLORING WRANGELLIA: HAIDA GWAII
They form part of Wrangellia, an exotic tectonostratigraphic terrane that includes Vancouver Island, parts western British Columbia and Alaska.
The Geological Survey of Canada sponsored many expeditions to these remote islands and has produced numerous reference papers on this magnificent terrain, exploring both the geology and palaeontology of the area.
The praise was well-earned and foreshadowed his significant contributions to come. Sixteen years later, he wrote up and published his observations on a strange Mount Stephen fossil that resembled a kind of headless shrimp with poorly preserved appendages.
Whiteaves work on the palaeontology of Haida Gwaii provided excellent reference tools, particularly his work on the Cretaceous exposures and fauna that can be found there.
One of our fossil field trips was to the ruggedly beautiful Cretaceous exposures of Lina Island. We had planned this expedition as part of our “trips of a lifetime.”
With great sandstone beach exposures, the fossil-rich (Albian to Cenomanian) Haida formation provided ample specimens, some directly in the bedding planes and many in concretion. Many of the concretions contained multiple specimens of typical Haida Formation fauna, providing a window into this Cretaceous landscape.
It is always interesting to see who was making a living and co-existing in our ancient oceans at the time these fossils were laid down. We found multiple beautifully preserved specimens of the spiny ammonite, Douvelleiceras spiniferum along with Brewericeras hulenense, Cleoniceras perezianum and many cycads in concretion.
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| Douvelliceras spiniferum, Cretaceous Haida Formation |
Missing from this trip log are tales of Rene Savenye, who passed away in the weeks just prior. While he wasn't there in body, he was with us in spirit. I thought of him often on the mist-shrouded days of collecting.
The genus Douvilleiceras range from Middle to Late Cretaceous and can be found in Asia, Africa, Europe and North and South America.
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