First Jawed Fish Had One Ugly Face Discover how Entelognathus primordialis, a fossil from 420 million years ago, reshapes our understanding of modern jaw vertebrates.

It may be hard to see, but you seem to share a family resemblance with Entelognathus primordialis. The fish, which lived 419 million years ago in an area that is now part of China, is the earliest ...

Entelognathus primordialis had a heavily armoured head and body, a scaly tail, jaws but no teeth and tiny eyes set in large, bony sockets A leading British scientist has said that the discovery of a ...

An artist's illustration depicts Entelognathus primordialis, the first jawed creature on earth. A fossil of Entelognathus found in China suggests that it had jawbones similar to those of modern fish ...