Large Olenellus gilberti Nevada Cambrian Trilobite

Description: A large specimen of this widespread species that is found in Nevada and California. The 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, making them quite attractive to collectors. Most are only found as a preserved cephalon, making those from the famous Pioche Shale highly desirable. This one has some matrix repair, and the left edge of the cephalon and genal are missing, but is still a fine affordable examplee.