Nevada Lower Cambrian Relichiid Trilobite Olenellus terminatus

This is a well preserved specimen of a species that has been recently described in 1998. The Olenellus genus is restricted to the early Cambrian (540-520 million years ago), making them good index fossils. They have a most distinctive large cephalon containing crescentic eyes. Most are only found as a preserved cephalon.

Also see: Trilobites of Nevada