Researchers found dozens of Triassic coelacanth fossils in UK museums. The fish were once mistaken for reptile bones. The coelacanth is often called a “living fossil.” Once believed to have vanished ...

For 150 million years, gars—a group commonly derided as “trash fish”—have mostly stayed the same, a rare consistency not even seen in sharks, a new study says. A longnose gar swims through Florida's ...

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 ...

Researchers discovered the earliest instance in which fish took advantage of their gill bones to make a new innovation in the ...

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The modern coelacanth is a famous "living fossil," long thought to have died out, but first fished out of deep waters in the Indian Ocean in 1938. Since then, dozens of examples have been found, but ...