Iguana-sized dinosaur cousin discovered in Antarctica

ScienceDaily | 1/31/2019 | Staff
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"This new animal was an archosaur, an early relative of crocodiles and dinosaurs," says Brandon Peecook, a Field Museum researcher and lead author of a paper in the Journal of Vertebrate Paleontology describing the new species. "On its own, it just looks a little like a lizard, but evolutionarily, it's one of the first members of that big group. It tells us how dinosaurs and their closest relatives evolved and spread."

The fossil skeleton is incomplete, but paleontologists still have a good feel for the animal, named Antarctanax shackletoni (the former means "Antarctic king," the latter is a nod to polar explorer Ernest Shackleton). Based on its similarities to other fossil animals, Peecook and his coauthors (Roger Smith of the University of Witwatersrand and the Iziko South African Museum and Christian Sidor of the Burke Museum and University of Washington) surmise that Antarctanax was a carnivore that hunted bugs, early mammal relatives, and amphibians.

Thing - Antarctanax - Antarctica - Weirder - Peecook

The most interesting thing about Antarctanax, though, is where it lived, and when. "The more we find out about prehistoric Antarctica, the weirder it is," says Peecook, who is also affiliated with the Burke Museum. "We thought that Antarctic animals would be similar to the ones that were living in southern Africa, since those landmasses were joined back then. But we're finding that Antarctica's wildlife is surprisingly unique."

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