Chemical clues preserved in tiny shells reveal that ocean acidification doomed a group of planktonic organisms that have ...

Tiny plankton shells used to reconstruct past polar ocean temperatures may contain two different chemical stories, a new study by iC3 researchers has found. The work shows that Neogloboquadrina ...

South Dakota's iridescent ammonites come from a sea that once split North America, and marine fossils turn up in every U.S.

Skeleton season may be just around the corner, but the skeleton age dawned with the early Cambrian Period, about 538 million to 506 million years ago. In this time span, most major animal groups ...

This hunt started with fossil shells but turned into something unexpected. Inside several fossils were calcite crystals formed over thousands of years. Florida geology created the perfect conditions ...

Some fossils of long-extinct sea creatures display brilliant rainbow colors. Known as ammolite, these gems come from the fossilized shells of ammonites, squid-like marine animals that vanished with ...

Everything about the discovery of a fossilized leatherback sea turtle in Alabama four years ago is fascinating. The findings of the never-before studied species were published in a study Friday, ...