It had some features of its lobe-finned ancestors, such as scales, webbed fins and primitive jaws. But it also bore similarities to later, four-legged, land-dwelling animals called tetrapods. It had ...

Those were hard-headed fish that stuck their necks out to move from water onto land. And now fossils of a creature with fins in both worlds show how its hard head and neck evolved. Shubin and his ...

New research has provided the first detailed look at the internal head skeleton of Tiktaalik roseae, the 375-million-year-old fossil animal that represents an important intermediate step in the ...

p>PHILADELPHIA—New research by scientists at The Academy of Natural Sciences provides the first detailed look at the internal head skeleton of Tiktaalik roseae, the 375-million-year-old fossil animal ...

The relationship of limbed vertebrates (tetrapods) to lobe-finned fish (sarcopterygians) is well established, but the origin of major tetrapod features has remained obscure for lack of fossils that ...

An extraordinary fish that existed 375 million years ago had unique features in its head that helped pave the way for vertebrate animals to live on land, scientists said Wednesday. Scientists for the ...

Newly exposed parts of Tiktaalik roseae--the intermediate fossil between fish and the first animals to walk out of water onto land 375 million years ago--are revealing how this major evolutionary ...

the braincase, pallete, and gills. The hyomandibula later evolved into a structure associated with hearing in mammals. The photo is from The Academy of Natural Sciences..

When our ancestors moved ashore some 360 million years ago, they underwent a lot of changes as they evolved from ocean-swimming fish to land-walking tetrapods. For one thing, they needed feet instead ...

When our ancestors moved ashore some 360 million years ago, they underwent a lot of changes as they evolved from ocean-swimming fish to land-walking tetrapods. For one thing, they needed feet instead ...