Researchers found evidence that the joints evolved as the species became active predators with jaws and mobile skeletons.

While the common ancestor of vertebrates with synovial joints is still a mystery, the oldest specimen with evidence of these ...

The researchers also studied fossils of extinct fishes dating back almost 400 million years and saw evidence that some of the ...

A new study from the University of Chicago has uncovered the surprising origin of the flexible joints that allow us to move our shoulders, knees, and elbows smoothly. These joints, called synovial ...

Cartilaginous fish form the same style of joint that we do, while jawless fish don't. Cartilaginous fish form the same style ...