Wyoming's Fossil Record

Geologic formations in Wyoming bear a wide range of fossils, representing life forms from nearly every geologic time period. Some of the oldest fossils on Earth are found here. From single-celled organisms to wooly mammoths; from bacterial algae to palm fronds, Wyoming hosts a diverse array of terrestrial and marine plant and animal fossils. Browse the geologic eras in the links at the left for more detail on Wyoming's fossil record.