Scientists found a 307 million-year-old fossil, Tyrannoroter heberti, revealing one of the earliest known land vertebrates ...

Researchers have shed new light on the features that enable tree-dwelling mammals to move effectively through their ...

An artist’s impression depicts Kryoryctes at Dinosaur Cove in Australia. New research supports the hypothesis that Kryoryctes is a common ancestor of both the platypus and echidna. - Peter Schouten ...

Hundreds of millions of years ago, the first animals to crawl onto land were strict meat-eaters, even as plants had already taken over the landscape. Now scientists have uncovered a ...

A new study explains how climbing down trees helped shape upright posture in early primates and changed the course of evolution.

Using the fossil record and modern cold-blooded critters, paleontologist Kelsey Jenkins recreates the hearing capabilities of ancient animals ...

Embryonic germ layers are the fundamental organizing principle in animal development. They provide the structural basis from which tissues and organs arise. During early embryogenesis, cells divide to ...

A 400-million-year-old jawed fish fossil found in the Arctic, Romundina gagnieri, could be a key link in the evolution of vertebrate teeth.

Life on Earth began in a way that still boggles the mind. Around 4.5 billion years ago, a chemical process called abiogenesis ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The story of two of ...

(CNN) — The story of two of the strangest animals on the planet just got a little stranger, thanks to clues revealed by a lone fossil specimen that scientists now say represents a long-extinct ...