The new research is the first to look back at early mammals in full color. Using advanced fossil imaging methods and a thorough examination of the pigment-producing cells present in living mammals, ...

According to most experts, the first mammal was Morganucodon, a small, shrew-like rodent that appeared during the Jurassic Period, approximately 200 million years ago. It weighed a few ounces and ...

More than 220 million years ago, as early dinosaurs were just getting their legs under them, the first mammals evolved from a group of tiny, weasel-like reptiles called cynodonts. New research hints ...

Earth's earliest mammals spent their lives at a more leisurely pace than their modern counterparts, but they lived a lot longer, analysis of some 200-million-year-old teeth has shown. Earth's earliest ...

You can say this about mammals: We've had a good run. Over the 250 million years since the first mammals diverged from reptiles and birds, we hairy, warm-blooded vertebrates have come to dominate the ...

WASHINGTON (Reuters) - The asteroid that smacked Earth 65 million years ago wiped out the dinosaurs and paved the way for mammals to dominate, but it took another 10 to 15 million years for the ...

Serotine bats are the first mammals found to reproduce through non-penetrative sex. Plus, a genetic link to cannabis addiction and SpaceX’s Starship touches space for the first time. Serotine bats are ...