Gerastos Trilobite Fossil

Gerastos Trilobite Fossil from Morocco

Size:  59 x 53 x 36mm
 
Weight:  131 gram

100% Authentic Gerastos trilobite fossils find near Issomour in Morocco. Gerastos is a small Proetidae family trilobite that is not super rare. They are found encased in hard limestone and was prepared using mechanical tools to expose their detailed shell.

Trilobites were a diverse group of extinct marine arthropods. They first appeared in the fossil record around 521 million years ago (Early Cambrian) and went extinct approximately 250 million years ago during the Permian mass extinction. They were one of the most successful of the early animals on our planet with over 25,000 species currently described species.  Their hard exoskeleton or shell ensured that they left an excellent fossil record.

These fossils are not perfect,  some are missing parts and some are glued together where they broke when extracted.