The ear bones of mammals were once the jaws of prehistoric reptiles. And so on. Despite these differences, all mammals share four traits that are shown in the diagram below: hair, mammary glands ...

Scientists have unearthed a remarkable fossil of a gorgonopsian, a saber-toothed predator they believe to be the oldest ever discovered.

One of Florida's most unique mammals is the manatee and you can learn all about them during a trip to Manatee Lagoon in ...

The Late Cretaceous period was 100.5-66 million years ago during a time when the Earth was dominated by dinosaurs. Living ...

The origin of mammals is shrouded in mystery, but every fossil clue helps rewrite the story. A new discovery on a Mediterranean island is challenging what we know about when—and where—mammal ancestors ...

Scientists have discovered 280 million-year-old fossil remains of a predator that gave rise to all mammals. This ancient animal, which does not yet have a species name, is the member of an ...