Unlike bony fish, sharks, rays, skates, and chimaeras are cartilaginous fish, meaning their skeletons are made of cartilage, not bone. Their skin is covered with denticles, tooth-like scales that ...

The efficient architecture of our joints, which allows our skeletons to be flexible and ... These joints are present in land vertebrates and bony fish, suggesting this feature had evolved in ...

our Fossil Fish Curator. ‘Being light and more flexible than bone, cartilage means sharks can typically swim faster than bony fish.’ Cartilage is about half as dense as bone. Sharks don’t have the ...

so-called because cartilage formed their skeletons, later gave rise to sharks and rays. They had small, rough scales, fixed fins, and sharp, replaceable teeth. The second group, the bony fish ...

Synovial joints are a key feature of most vertebrate skeletons, providing more mobility ... These joints are present in land vertebrates and bony fish, suggesting this feature had evolved in ...

The efficient architecture of our joints, which allows our skeletons to be flexible and sturdy, originated among our most ancient jawed fish ancestors, according to a study published in the open ...

bone-shearing teeth. Evidence suggests Cretoxyrhina fed on mosasaurs, plesiosaurs, and even the giant bony fish Xiphactinus, a fierce predator itself. Sharks are made of cartilage, which does not ...