Large Cambrian predatory fossil found in the Rocky Mountains of Canada

The arthropod changed from the front.

During the Cambrian explosion more than 500 million years ago, the oceans full of strange creatures who were engaged in redefining the aspect of life on Earth. One of these creatures was just chiseled from the Canadian mountains and it is now one of the largest known animals of the period.

The animal is Titanokorys gainesi, and was built like a tank. T. gainesi he had multifaceted eyes, a ring-shaped mouth that looked like a slice of pineapple, claws for plucking prey, a trail of flaps for swimming, and a cap covered in a massive tent. That he was a member of a primitive group of arthropods called radiodonts. Fossils morphology and the circumstances of its discovery were published today at the Royal Society Open Science.

“The first specimens were found in 2014, but it was not until 2018 that we discovered a particularly virgin hood [and] we recognize the importance of this finding. ” Joe Moysiuk, a paleobiologist at the Royal Ontario Museum in Toronto and co-author of the paper, said in an email to Gizmodo. “My co-author Jean-Bernard split a particularly large shale slab, and I remember hearing a snort followed by many screams and everyone crowding around. We found a lot of interesting things, but this one left an impression! ”

The rock that holds a fossil of T. gainesi.

The team found the fossil in Canada Burgess Shale, a stretch of rock in western North America that has given superbly well-preserved remains of the animals that lived during the Cambrian (541 million 485 million years ago), when the area era covered by mar. T. gainesi and other predators as if they had been filter feeders, sifting through the mud and sucking up any tasty chunks that was found.

Some of these petrified seabeds were increasing over time for tectonic changes, now composes the high shale in Canada Yoho National Park. To drop the fossil the mountain, Moysiuk said: the team wrapped it in foam, duct tape and pieces of pool noodles, then suspended the package from a helicopter.

Two years ago, the same team found an animal similarly T. gainesi; they called him Cambroraster falcatus for its way of resembling Han Solo’s Millennium Falcon. The shale retains even the soft tissue remains of these Cambrian creatures, i.e. this paleontologists you can study their evolutionary relics in more detail than they can many dinosaurs, which appeared about 300 million years later. (Yes, there is more time to separate the first dinosaurs from the Cambrian period than to separate them from us!)

Perhaps the most impressive feature of T. gainesi is its size. Most of the animals that inhabited the Cambrian oceans were smaller than a pink finger; this one is about a foot and a half long. If it were the typical Cambrian beast the average human height, a T. gainesi in relative proportion it would be nearly 40 feet high.

A C. falcatus is pursued by an even greater one T. gainesi. Animation by Lars Fields, © Royal Ontario Museum

“The size of this animal is absolutely amazing, it is one of the largest animals of the Cambrian period ever found,” said the author of one of the leading museums Jean-Bernard Caron, paleontologist of the Royal Ontario Museum, in a museum. Press release.

“These enigmatic animals undoubtedly had a great impact on the ecosystems of the Cambrian seabed. Theirs the limbs of the front looked like multiple rakes stacked and would have been very efficient at carrying to the mouth everything they caught in their little spines. The huge back hood could have worked like a plow, ”Caron added.

You can imagine the creature as a massive carnivorous zeppelin, floating right on the seabed while dredging manure for food. The discovery expands the team’s knowledge of predators with shells during the Cambrian period; for the good of everyone who loves nightmare creatures, we hope you find more.

More: Scientists find a huge amount of marine fossils from the Cambrian explosion in China

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