Ancient reptile had mammal-like tooth enamel Priosphenodon specimens found in Argentina show the Late Cretaceous reptile evolved to have resilient tooth enamel similar to that in mammals Date: May 12, ...

What does it take to describe a new group of ancient animals? AMNH Paleontologists, Mike Novacek and Paúl Velazco, explain why dental detective work is a big part of the job Paleontologists study ...

The fossils of an ancient creature resembling a small opossum and equipped with modern-looking teeth suggest our furry ancestors were far more diverse in the age of dinosaurs than previously thought.

Mammal teeth, jaw bones and muscles evolved to produce side-to-side motions of the jaw, or yaw, that allowed our earliest ancestors to grind food with their molars and eat a more diversified diet, ...

The earliest known extinct mammal has been identified using fossil tooth records. Brasilodon quadrangularis was a small ‘shrew-like’ animal that measured around 20cm in length and had two sets of ...

Scientists pioneer a way to use high-powered X-rays to reconstruct the developmental biology of mammals from 200 million years ago. Most grade school kids know that they can count tree rings to learn ...

A computer model of tooth evolution designed to assess the impact of developmental dynamics on natural selection reveals that complexity reduces the likelihood of maximum fitness being attained. See ...

Some dinosaurs, a new study suggests, knew very different crocs from today's reptiles—including a newfound fossil crocodile that might seem to have been designed by committee. (See pictures of the ...

Brasilodon quadrangularis, the earliest known mammal, has been identified using fossil tooth records (2022 Anatomical Society/Wiley) The earliest known extinct mammal has been identified using fossil ...