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 appeared much later, shows how fish rapidly experimented with new feeding strategies after mass extinction.
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 appeared much later, shows how fish rapidly experimented with new feeding strategies after mass extinction. 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 appeared much later, shows how fish rapidly experimented with new feeding strategies after mass extinction.