Gerastos, Cyphaspis, & Platyscutellum Trilobite Cluster

This is a fantastic cluster of trilobites from Mrakib, Morocco with three different species present. There are five complete Gerastos averaging about .8" in length. There are several, partial, "devil horned" Cyphaspis walteri trilobites and a single Platyscutellum which is about 1.8" long. The entire piece of limestone measures 5.4 x 4.4" and the preparation is excellent on this piece. There is some crack filling on the rock, but there doesn't appear to be any significant restoration to any of the trilobites.

Trilobites were a very diverse group of extinct marine arthropods. They first appeared in the fossil record in the Early Cambrian (521 million years ago) and went extinct during the Permian mass extinction (250 million years ago). They were one of the most successful of the early animals on our planet: over 25,000 species have been described, filling nearly every evolutionary niche. Due in large part to their hard exoskeletons (shells), they left an excellent fossil record.

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