See tectonics

The study of fossils and the history of life

An exposure from the Pliocene Epoch within the San Joaquin Formation of the Kettleman Hills geographic area of California. The zone is named for a species of scallop that is abundant within the formation.

An exposure from the early Pliocene Epoch within the Etchegoin Formation of the Kettleman Hills geographic area of California. The zone is named for a species of scallop that is abundant within the formation.

An exposure from the early Pliocene Epoch within the Etchegoin Formation of the Kettleman Hills geographic area of California. The zone is named for a thick-shelled species of bivalve that is abundant within the formation.

See the entry for coral. Diagram below shows one coral polyp.

A scientist who studies fossils.