(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 ...

The fish were found with hot glass in their gills, likely from flaming debris. The discovery of a fossilized fish may offer a glimpse into the day an asteroid hit the earth and wiped dinosaurs off the ...

A rare fossil from Thailand identifies a 25-foot spinosaurid that lived along river systems 125 million years ago.

Paleontologists unearthed fish teeth that are 14 million years older than any other teeth found from any species – and the discovery could rewrite our understanding of early evolution. Four studies ...

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 ...

A small fossil reveals that the largest freshwater fish, Otophysans, emerged in the sea, not in rivers, changing the ...

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 ...

Fossilized fish found in Australia are so well preserved that paleontologists can see what the creatures ate for their last ...

Millions of prehistoric marine fossils were discovered beneath a California high school over the course of a multi-year construction project. The relics recovered at San Pedro High School included ...

Long-extinct "fish lizards" first appeared in the ocean about 250 million years ago, and their fossils were found high in the Swiss Alps. According to a study published Thursday in the Journal of ...