They incorporated data on the fossils and known evolutionary trees of both dinosaurs and their close reptile relatives, as well as the geography of the early Triassic. At this time, tectonic ...

Scientists think they know where the missing pieces to the puzzle of the evolution of dinosaurs could be found.

The end of the Triassic Period, 201.4 million years ago ... for example. Modern birds are dinosaurs, but their initial evolution may also have its roots in the Middle Jurassic. Archaeopteryx, ...

The story of reptilian evolution is a saga of branching ... during the Late Triassic. So, they’re a bit younger than dinosaurs as a group. Turtles diverged from a group called Archosauromorpha.

In the latest days of the Triassic, early dinosaurs lived alongside giant amphibians, gharial-like phytosaurs and an array of crocodile relatives that took forms ranging from armadillo-like to ...

UW-Madison geology museum scientist Dave Lovelace’s 21st birthday was a bit unconventional. The Casper, Wyoming, native who ...

While sharing certain traits defining them as dinosaurs, they had sufficient differences that suggest millions of years of dinosaur evolution ... ecosystems during the Triassic," Heath said.

They were the only group of dinosaurs to survive the Cretaceous mass extinction around 65 million years ago (not to be confused with the Permian-Triassic mass extinction ... It’s a reminder of just ...

The mystery behind the origins of the dinosaurs may have been given a new twist, with a modeling study suggesting they may have evolved in what is today equatorial Africa and South America.