Researchers report three distinct tanystropheid taxa from the upper Blue Mesa Member of the Chinle Formation in the Petrified Forest National Park in Arizona, including a new genus and species, ...

Learn how fossils from Arizona’s Petrified Forest National Park revealed that a Late Triassic crocodile relative may have started life on four legs before walking on two as an adult.

A “peculiar” ancient relative of the crocodile which experts believe began life on four legs before, in adulthood, it learnt how to walk on just two has been revealed in a new study.

The smallest of newly found fossils can upend what paleontologists know about our history. A team of paleontologists from Virginia Tech and the U.S. Petrified Forest National Park, among others, have ...

If you thought that crocodiles were menacing enough, be glad that you didn’t live in Arizona some 225–201 million years ...

The poodle-sized reptile that lived over 200 million years ago was among creatures that had features similar to dinosaurs it ...

Fossils reveal a small ancient reptile related to crocodiles, Sonselasuchus cedrus, that may have switched from four legs to two as it grew.

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American The Triassic doesn't get enough credit. Truly ...

Scientists have unearthed a "peculiar" ancient crocodile that walked on two legs – after beginning its life on four. Named Sonselasuchus cedrus, the creature roamed the Earth during the Late Triassic ...

A team of paleontologists have discovered the first 'unmistakable' Triassic-era caecilian fossil -- the oldest-known caecilian fossils -- thus extending the record of this small, burrowing animal by ...