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 ...

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.

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 ...

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 ...

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.

In 1878, German anatomist Karl Gegenbaur proposed a theory that fish fins and human limbs evolved from a structure that resembles gill arches, a collection of bony "loops" in fish that support the ...

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 ...