"The typical mammal from the time of dinosaurs," he says ... that both of today's surviving monotremes descended from semi-aquatic mammals. However, it's not proof. "You rarely get absolute ...

From meme stars to conservation icons, the capybara is experiencing a popularity boom. Learn more about these rodents that ...

during the Age of Dinosaurs. In this scenario, the modern platypus lineage has retained the ancestral semi-aquatic burrowing lifestyle for more than 100 million years. Echidnas would have reverted ...

The only thing scarier than a T. Rex on land is a T. Rex in water. Jurassic Park III‘s infamous riverboat scene had fans at ...

A newly analyzed fossil has revealed surprising insights into the evolutionary history of echidnas, suggesting that their ...

The teeth of this fossil Borealosuchus skull typify the toothy grin of semi-aquatic generalist ... the meteor that killed the non-avian dinosaurs), most of the survivors are semiaquatic generalists ...

The bone structure closely resembles that of semi-aquatic animals like the platypus. A tiny fossilized bone unearthed three decades ago at Dinosaur Cove in southeastern Australia may dramatically ...

and flew alongside dinosaurs during the Age of Reptiles. Mosasaurs were massive marine reptiles that dominated the oceans during the Late Cretaceous period, approximately 98-66 million years ago.

and flew alongside dinosaurs during the Age of Reptiles. Mosasaurs were massive marine reptiles that dominated the oceans during the Late Cretaceous period, approximately 98-66 million years ago.

The humerus bone from Kryoryctes cadburyi challenges the theory that monotremes evolved from a land-dwelling ancestor.

The Strange Reptile That Lived Before the Time of the Dinosaurs Hovasaurus is an extinct genus of ... These adaptations allowed Hovasaurus to live a semi-aquatic or totally aquatic life. Researchers ...

Researchers have found evidence of a previously unrecognized soft tissue structure in the cheek region of many dinosaur ...