About 385 million years ago in the Devonian age, a strange, two-and-a-half-foot-long shark died and drifted to the bottom of the sea, over what is now the Rhine River valley. Gladbachus adentatus, ...

Jan. 12 (UPI) --A basking shark-like fish -- only the size of a sardine -- is helping paleontologists better understand the earliest branches of the vertebrate family tree. The fish's 385 million-year ...

Sharks might not be a natural biological group, with most species potentially closer kin to rays than to an oddball group of sharks.

150-million-year-old shark fossil in Germany defies classification. Bavariscyllium fossil reveals unique features and sensory organs. Study suggests shark evolution is more complex than once believed.