The Devonian ancestors of fishes living today belonged to two main nonarmored groups. The cartilaginous fish, so-called because cartilage formed their skeletons, later gave rise to sharks and rays.

As Sharma and her team found, cartilaginous fish with jaws ... about 387 to 360 million years ago during the Middle to Late Devonian period. When using CT scanning to study a Bothriolepis fossil ...

The researchers also studied fossils of extinct fishes dating back almost 400 million years and saw evidence that some of the oldest jawed fishes had bones with joint cavities for articulated ...

For decades, the coelacanthexisted only in fossil records—until one turned up in a South African fishing net. It was 1938 when a museum curator in East London noticed an unfamiliar fish in a haul from ...

Dunkleosteus was a massive armored fish that ruled the Devonian seas over 358 million years ago. With powerful, self-sharpening jaws and an immense bite force, it was one of the most fearsome ...