DRAGONFLIES: ODONATA

Dragonflies, from the order Odonata, have been around for over 250 million years. The most conspicuous difference in their evolution over time is the steady shrinking of their wingspan from well over two and a half feet down to a few inches.

Voracious predators, today they dine on bees, wasps, butterflies and avoid the attentions of birds and wee lizards -- but back in the day, they had a much larger selection of meals within their grasp.

Time has turned the tables. Small lizards and birds who today choose dragonflies as a tasty snack used to be their preferred prey.

LOWER CRETACEOUS ACANTHOHOPLITES

A very pleasing example of the Ammonite Acanthohoplites bigoureti (Seunes, 1887). Lower Cretaceous, Upper Aptian, from a riverbed concretion, Kurdzhips River, North Caucasus Mountains, Republic of Adygea, Russia. 

Geologically, the Caucasus Mountains belong to a system that extends from southeastern Europe into Asia and is considered a border between them. The Greater Caucasus Mountains are mainly composed of Cretaceous and Jurassic rocks with the Paleozoic and Precambrian rocks in the higher regions. 

Some volcanic formations are found throughout the range. On the other hand, the Lesser Caucasus Mountains are formed predominantly of the Paleogene rocks with a much smaller portion of the Jurassic and Cretaceous rocks. 

The evolution of the Caucasus began from the Late Triassic to the Late Jurassic during the Cimmerian orogeny at the active margin of the Tethys Ocean while the uplift of the Greater Caucasus is dated to the Miocene during the Alpine orogeny.

The Caucasus Mountains formed largely as the result of a tectonic plate collision between the Arabian plate moving northwards with respect to the Eurasian plate. As the Tethys Sea was closed and the Arabian Plate collided with the Iranian Plate and was pushed against it and with the clockwise movement of the Eurasian Plate towards the Iranian Plate and their final collision, the Iranian Plate was pressed against the Eurasian Plate. 

As this happened, the entire rocks that had been deposited in this basin from the Jurassic to the Miocene were folded to form the Greater Caucasus Mountains. This collision also caused the uplift and the Cenozoic volcanic activity in the Lesser Caucasus Mountains.

The preservation of this Russian specimen is outstanding. Acanthohoplites bigoureti are also found in Madagascar, Mozambique, in the Rhone-Alps of France and the Western High Atlas Mountains and near Marrakech in Morocco. This specimen measures 55mm and is in the collection of the deeply awesome Emil Black.

MUSEO NACIONAL DE CIENCIAS NATURALES

HALL OF GIANTS NEW MEXICO

Carlsbad Caverns National Park is in the Chihuahuan Desert of southern New Mexico. 

It features more than 100 caves. The Natural Entrance is a path into the namesake Carlsbad Cavern. Stalactites cling to the roof of the Big Room, a huge underground chamber in the cavern. Walnut Canyon Desert Loop is a drive with desert views. 

Rattlesnake Springs, a desert wetland, attracts reptiles and hundreds of bird species. If you find yourself down in New Mexico it is well worth a visit. 

Definitely bring your camera and some hiking boots with good ankle support and grip for the slippery rock you will need to traverse to explore these beauties in all their glory.

EAGLE SOARING

 

PALEONTOLOGY MUSEUM, FLORENCE, ITALY

CARNOTAURUS SASTREI

Carnotaurus sastrei, a genus of large theropod dinosaur that roamed, Argentina, South America during the Late Cretaceous period, 72 to 69.9 million years ago.

This fellow (or at least his skull) is on display at the Natural History Museum in Madrid, Spain. For now, he is the only known genus of this species of bipedal predator.

The skull is quite unusual. Initially, it has a very marine reptile feel (but make no mistake this guy is clearly a terrestrial theropod). Once you look closer you see his bull-like horns (from whence he gets his name) that imply battle between rivals for the best meal, sexual partner and to be the one who leads the herd.

I'll be interested to see his cousins once more specimens of the genus are unearthed.

DIPLODOCUS CARNEGIEI

Craneo Diplodocus carnegiei, Morrison Formation, Jurassic

OLD HABITS IN CORDOBA SPAIN

Nuns stepping out from the palace, Cordoba, Spain

A group of nuns stepping out in Cordoba, Spain. The nuns earn their living selling sweets and confections using recipes handed down from the Romans and Moors. Many convents are closing because they have fewer nuns so this art may one day be lost.

The procedure for buying the sweets is archaic but charming. You enter the convent into a very small room with a lazy Susan installed on the wall. 

While we did see some nuns in the street, many do not leave the cloister or appear in public. You never see the nun with whom you do the transaction since these are cloistered nuns who avoid direct contact with the public.

On the wall beside the lazy Susan will be a price list. You look it over and decide which sweets you want to buy. Then you ring a buzzer on the wall. After a while, you will hear the voice of a nun greet you and ask you what you want to purchase. 

You share your order and after a few minutes the lazy Susan will turn and you will find your order on it. You then put your money on the lazy Susan and turn it so that the nun can get it. If there is change, the nun puts it on the lazy Susan and you then can get your change.

GRANADA, ANDALUSIA, SPAIN

SHARKS: ELASMOBRANCH FISH

Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven-gill slits on the sides of the head, and pectoral fins that are not fused to the head. 

Modern sharks are classified within the clade Selachimorpha and are the sister group to the rays.

While we often fear them — yes, they can eat you — they should fear us as we dine on them with shocking regularity. In lieu of Shark Fin Soup, a better choice would be investing money and time into their conservation. 

ALHAMBRA PALACE: GRANADA, SPAIN

40 DEGREES OF LATITUDE: THE ROCKIES

Images of darkened valleys, golden late summer light, icy-blue glaciers, white caps on an endless Pacific, small, hardy, yet perfect alpine flowers, spring to mind and each carries a small element but doesn't quite capture it. Heck, even our dog parks are ruggedly beautiful and by the sheer number of visits, would certainly define a large part of my west coast experience.

But the niggling thought is still there. Is there one a single element I could name that epitomizes this vast, diverse landscape? Sea to Sky, lakes to mountains, I've kayaked, hiked, sailed and lovingly explored a great deal of it. Through 40 degrees of latitude, from Yukon to Mexico, the Rocky Mountains are North America's geographic backbone.

This is the Great Continental Divide, where the interminable flatness of the interior collides with the Western Cordillera, a major mountain system of the world. From the highest ridges of the Rockies, the rivers flow to opposite corners of the land, north to the Beaufort Sea, south to the Gulf of Mexico, east to Hudson Bay and west to the Pacific.

KWAS'KWAS: OUR BEAUTIFUL BLUE JAYS

If you live in North American, there is a high probability that you have seen or heard the bird song of the Blue jay, Cyanocitta cristata (Linnaeus, 1758).

Blue Jays are in the family Corvidae — along with crows, ravens, rooks, magpies and jackdaws. They belong to a lineage of birds first seen in the Miocene — 25 million years ago. 

These beautifully plumed, blue, black and white birds can be found across southern Canada down to Florida. The distinctive blue you see in their feathers is a trick of the light. Their pigment, melanin, is actually a rather dull brown. The blue you see is caused by scattering light through modified cells on the surface of the feather as wee barbs.

Blue jays like to dine on nuts, seeds, suet, arthropods and some small vertebrates. 

If you are attempting to lure them to your yard with a bird feeder, they prefer those mounted on trays or posts versus hanging feeders. They will eat most anything you have on offer but sunflower seeds and peanuts are their favourites. 

They have a fondness for acorns and have been credited with helping expand the range of oak trees as the ice melted after the last glacial period.  

Their Binomial name, Cyanocitta cristata means, crested, blue chattering bird. I might have amended that to something less flattering, working in a Latin word or two for shrieks and screams — voce et gemitu or ululo et quiritor. While their plumage is a visual feast, their bird chatter leaves something to be desired. 

In the Kwak̓wala language of the Kwakiutl or Kwakwaka'wakw, speakers of Kwak'wala, of the Pacific Northwest and my family, a Blue Jay is known as kwa̱skwa̱s. 

The Kwak’wala word for blue is dzasa and cry is ḵ̕was'id. For interest, the word for bird song in Kwak'wala is t̕sa̱sḵwana. Both their songs and cries are quite helpful if you are an animal living nearby and concerned about predators. 

FOLLOWING IN THE FOOTSTEPS OF DINOSAURS

Dinosaur Track, Tumbler Ridge

Imagine kneeling beside a three-toed depression in a slab of sandstone, your fingers tracing the edges of a print left by a creature that thundered across the Earth over 100 million years ago. 

Dinosaur tracks—known scientifically as ichnites—are time capsules, snapshots of behavior frozen in stone. 

Unlike bones, which tell us what dinosaurs looked like, footprints reveal how they moved, how fast they walked, whether they traveled alone or in herds, and even how they interacted with their environment.

Footprints are classified by shape rather than by exact species, since tracks are trace fossils—evidence of activity, not anatomy. Paleontologists group them into “ichnogenera,” names based on their form.

• Theropods, the meat-eating dinosaurs like Tyrannosaurus and Allosaurus, left narrow, three-toed prints (tridactyl) with claw marks. Their tracks often show long, slender toes and a V-shaped outline.
• Ornithopods, the plant-eaters like Iguanodon, also made three-toed prints, but theirs are broader with blunt toes—built for walking on both two and four legs.
• Sauropods, the long-necked giants, left large round or oval footprints—massive impressions of their column-like feet, often paired with crescent-shaped handprints nearby.
• Ankylosaurs and stegosaurs left shorter, wider tracks, with toe impressions that resemble stubby, armored stumps.

Theropod Track

You can see spectacular dinosaur tracks across the world and close to home in western Canada. 

The Peace Region of British Columbia boasts the Tumbler Ridge Global Geopark, where hundreds of Cretaceous-era footprints adorn ancient riverbeds. 

In Alberta, the Dinosaur Provincial Park and the Willow Creek tracksites near Lethbridge preserve both sauropod and theropod prints. 

Farther south, classic trackways appear in Utah’s St. George Dinosaur Discovery Site and Colorado’s Picketwire Canyonlands, where sauropods once waded through ancient mudflats.

If you spot a fossil track, look closely at its size, toe count, and depth. 

Is it long and narrow, hinting at a swift predator, or broad and round, evidence of a lumbering herbivore? 

These shapes tell stories—of migration, of pursuit, of entire ecosystems now long vanished—each print a footprint not just in rock, but in time itself.

Definitely take a photo if you are able and if within cell range, drop a GPS pin to mark the spot to share with local experts when you get home.

Sometimes, you can find something amazing but it takes a while for others to believe you. This happened up in Tumbler Ridge when the first dino tracks were found.

In the summer of 2000, two curious boys exploring a creek bed near Tumbler Ridge, British Columbia, made a discovery that would put their small northern town on the paleontological map. While splashing along Flatbed Creek, Mark Turner and Daniel Helm noticed a series of large, three-toed impressions pressed deep into the sandstone—too regular to be random. 

They had stumbled upon the fossilized footprints of dinosaurs that had walked there some 100 million years ago during the Cretaceous. Their find sparked scientific interest that led to the establishment of the Tumbler Ridge Museum and later the Tumbler Ridge Global Geopark. 

Since then, paleontologists have uncovered thousands of tracks in the area—from nimble theropods to massive sauropods—etched into the ancient riverbeds and preserving a vivid record of dinosaurs on the move in what was once a lush coastal plain. I'll share more on that amazing story in a future post!

FOSSIL FIELD TRIP VIA JET RANGER