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

A fossil analysis suggests that the yunnanozoan, a wormlike fish that flourished around 520 million years ago, sported structures that were the precursors of the head and jaws of modern vertebrates.

Fish can change their teeth quickly, which speeds up their evolution. Cichlids in African lakes show the fastest ...

The cranio-vertrebral joint in fish is like any other intervertebral joint. The head is not any more mobile on the spinal column than any other two vertebrae are on each other. Fish can’t move its ...

He studies how humans evolved. He told me that fish and humans are distant relatives. All vertebrates – animals with backbones – are related. “Humans and fish aren’t close evolutionary ...

These joints are present in land vertebrates and bony fish, suggesting this feature had evolved in the common ancestors of these groups, but it remains unclear when in early vertebrate evolution ...

The silver spinyfin has an extraordinary diversity of rod photopigments, which researchers propose may allow it to see color in the deep, dark sea. After a year teaching an algorithm to differentiate ...