Learn about how chemical fossils helped researchers identify one of Earth’s earliest animals: a sea sponge from the Ediacaran ...

A team of MIT geochemists has unearthed new evidence in very old rocks suggesting that some of the first animals on Earth were likely ancestors ... as they have identified a new chemical fossil in the ...

More than half a billion years ago, the world's first monster appeared. With bulging eyes and fearsome, grasping claws, Anomalocaris cruised the seas during the geologic time period known as the ...

The early earth / editor, D.R. Nelson. Earth's formation and first billion years / D.R. Nelson. The early Precambrian stratigraphic record of large extraterrestrial impacts / B.M. Simonson, G.R.

This animation created for Evolution: "Great Transformations" depicts creatures whose fossils were found at the Burgess Shale. As alien as these creatures seem, they are also surprisingly familiar.