Also known as the rock sturgeon, the lake sturgeon is one of 27 species of sturgeon, a family of bony fish that found around the world that first appears in the fossil record more than 200 million ...

The first sharks on Earth ... The difference between a shark and other fish: Unlike bony fish, sharks, rays, skates, and chimaeras are cartilaginous fish, meaning their skeletons are made of ...

Red-colored sediments, generated when North America collided with Europe, give the Devonian its name, as these distinguishing rocks were first studied ... the bony fish, were covered in scales ...