They found that a small, furry, insectivorous mammal was the common ancestor of all placental mammals, including humans. Fossil evidence suggested that the group to which this animal belonged was the ...

The remains of the oldest gorgonopsian ever discovered unveil the secrets of a formidable predator, at the crossroads between reptiles and mammals. 270 million years ago, Majorca was not an island ...

T he oldest known ancestor of mammals lived at least 270 million years ago in what is now Mallorca. About one meter long, it was a predator with sharp fangs and a appearance not very different ...

Two studies published in the latest issue of Science have revealed that birds, reptiles, and mammals have developed complex ...

Researchers have found a fossilized ancestor of modern seals and sea lions that they say represents an evolutionary step in the organisms' transition from land-dwelling mammals to the aquatic ...

But despite their differences now, all mammals stemmed from one common ancestor, with the earliest mammal fossils currently thought to date to between 220 and 165 million years ago. Watch as senior ...

The animal lacks all scales. This material relates to a paper that appeared in the June 24, 2016, issue of Science Advances, published by AAAS. The paper, by N. Di-Poï at University of Geneva in ...