Dinosaurs belong to the reptilian group known as diapsids, which also includes modern birds and reptiles like lizards. Mammals, on the other hand, have their roots in an entirely different branch ...

When we think of the age of dinosaurs, we often picture huge reptiles like Tyrannosaurus rex or long-necked dinosaurs ...

The creatures cruised the world’s oceans with features we often associate with marine mammals, such as coats of blubber and ...

Amniotes split into the sauropsids (leading to birds and reptiles) and synapsids (leading to mammal-like reptiles). These small early mammals developed hair, homeothermy, and lactation (red lines).

The scientists on the team, who are from the Fukui Prefectural Dinosaur Museum in Katsuyama, the Ono City Board of Education and elsewhere, also said a fossil of a mammal-like reptile has been ...

Nor is Dimetrodon or other reptiles in the same group (previously called 'mammal-like reptiles' and now called synapsids). None of these other extinct groups shared the characteristic upright stance ...

Alligators can live on land and in water, but that doesn't mean they can breathe underwater like fish. But how long can alligators stay underwater? And how long can they hold their breath? Let’s find ...