The fossil record shows that cartilaginous fish evolved at least 420 million years ago, and rapidly diversified to become one of the most species-rich groups of predators on Earth. While they have ...

One quarter of the world's cartilaginous fish, namely sharks and rays, face extinction within the next few decades, according to the first study to systematically and globally assess their fate. One ...

What do we have in common with fish, besides being vertebrates? The types of joints we (and most vertebrates) share most likely originated from the same common ancestor. But it’s not a feature that we ...

The remains of a 415-million-year-old fish skull from Siberia though miniscule in size offer hints about the origins of all jawed vertebrates, ranging from reptiles to humans, a new study finds.

Our understanding of shark evolution may need to be rethought following the discovery of a 410-million-year-old ancestor of this group of fish. Sharks are cartilaginous fish, meaning their skeletons ...

Today, ray-finned fish, which belong to the bony fish, are by far the most biodiverse fish group in both salt- and freshwater. Their spectacular variety of forms ranges from eels, tuna, flounders and ...

The evolution of the shark is not what most people would expect. Instead of sharks evolving from a massive predator, the original creature was a small, leaf-shaped fish. This fish lacked eyes and fins ...

We have established a cartilaginous fish cell line [Squalus acanthias embryo cell line (SAE)], a mesenchymal stem cell line derived from the embryo of an elasmobranch, the spiny dogfish shark S.

First, let’s talk about the difference between bone and cartilage. They both are materials that can make up a skeleton, but they are quite different. Bone doesn’t bend. It is very strong, but it’s ...