Scientists uncovered a 310-million-year-old fish fossil with a “tongue bite,” teeth on the roof and floor of its mouth that worked like a second jaw. This adaptation, previously thought to have ...

A tiny fossil fish from Alberta is forcing scientists to rethink a story that has sat quietly in textbooks for decades. It is a story about how freshwater fish rose to dominance, and how a few bones ...

What do the ginkgo (a tree), the nautilus (a mollusk) and the coelacanth (a fish) all have in common? They don't look alike, and they aren't biologically related, but part of their evolutionary ...

Researchers in Alberta uncovered a fossil fish that rewrites the evolutionary history of otophysans, which today dominate freshwater ecosystems. The new species, Acronichthys maccognoi, shows early ...