A trade-off between tooth size and jaw mobility has restricted fish evolution, Nick Peoples at the University of California Davis, US, and colleagues report in the open-access journal PLOS Biology .

In 2015, two members of the Blue Beach Fossil Museum in Nova Scotia found a long, curved fossil jaw, bristling with teeth.

The species was named Sphyragnathus tyche, combining Greek words “sphyra,” meaning hammer and “gnathus,” meaning jaw for the ...

Buried for 209 million years, a tiny flying reptile and its ancient neighbors just emerged from Arizona’s Triassic past.

UC Davis study of 161 fish species using high-speed video reveals evolutionary trade-off: large teeth prevent mobile jaw development.

The large fish, spanning nearly a metre on the lake bed, lived in waters thick with rival fish, including giants several times its size ...

They’re a type of ray-finned fish, which began their evolution journey around 395 million years ago. These prehistoric fish belong to the genus Polypterus , which means “many wings.” ...

Researchers have discovered a new species of ancient fish with hooked front fangs that made them a fearsome and effective ...

To find out, Rice recently set out to do a large-scale survey of published research on sound production in ray-finned fishes, or actinopterygians, which represent more than half of all vertebrate ...

In comparison, most early ray-finned fish would have been around 10 inches. At that size, the fish could have been a top predator in this coastal lake, Lucas said. To this day, Harris says it's ...

Coelacanths' fins move in a synchronized pattern similar to four-limbed animals. Coelacanths have center pointed tail fins instead of forked or crescent shaped tails seen in ray-finned fish.