(Reuters) - Scientists in Australia have unearthed beautifully preserved fossilized hearts and other internal organs of ancient armored fish in a discovery that provides insight into the evolution of ...

Our sensitive teeth originally evolved from the "body armor" of extinct fish that lived 465 million years ago, scientists say. In a new study, the researchers showed how sensory tissue discovered on ...

A big catch of fish fossils in southern China includes the oldest teeth ever found, researchers say. The findings may help scientists learn how our aquatic ancestors got their bite. The finds offer ...

Scientists analyzing 443-million-year-old Scottish fossils have uncovered the early evidence that some of the first groups of ...

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NEW YORK — A big catch of fish fossils in southern China includes the oldest teeth ever found - and may help scientists learn how our aquatic ancestors got their bite. The finds offer new clues about ...

PHILADELPHIA — The recent discovery above the Arctic Circle of remarkably well preserved fossils from a new species of ancient fish provides a key marker in the evolutionary transition of fish to ...

The first known cases of accidental choking have been discovered, dating back 150 million years, when some opportunistic fish got more than they bargained for picking off algae and slime from dead ...

Long before humans evolved, a small eel shaped creature swimming in ancient seas carried eyes that look strikingly familiar.