A team of researchers including SF State Assistant Professor of Biology Scott Roy has sequenced the entire genome of the elephant shark, uncovering several features that may shed light on 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 ...

Scientists have discovered that both bony and cartilaginous fish develop their appendages via a shared mechanism -- the mechanism is also observed in land-dwelling vertebrates such as mice. They found ...

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.

Cartilaginous fish have changed much more in the course of their evolutionary history than previously believed. Evidence for this thesis has been provided by new fossils of a ray-like shark, ...

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 ...

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 ...

In 2015, two members of the Blue Beach Fossil Museum in Nova Scotia found a long, curved fossil jaw, bristling with teeth. Sonja Wood, the museum's owner, and Chris Mansky, the museum's curator, found ...

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.

To compare and classify a "living fossil," the coelacanth, in relation to a moray eel and a bull shark. Review with students the meaning of the phrase "living fossil" (an organism with a basic body ...

A newly discovered fish fossil is the earliest known creature with what might be recognized as a face. Subscribe to read this story ad-free Get unlimited access to ad-free articles and exclusive ...