Lizards are some of the most diverse and fascinating creatures on the planet. There are so many types of reptiles that come in an incredible variety of shapes, sizes and colors, from worm-sized snakes ...

Vertebrates, for example, are divided into mammals, birds, reptiles, amphibians and fish. Mammals are warm-blooded animals with hair or fur and can produce milk to feed their young. They have ...

A new study finds nearly 50 hidden relatives of Pterodactylus, the first pterosaur. Joined by its newly discovered relatives, Pterodactylus's 'family' now encompasses tiny flaplings, a host of ...

As these early reptiles adapted to new lifestyles ... vestigial remnants of their legged ancestors. The most notable examples of this are the spurs found in some species of snakes, like the ...