.95" Detailed Phacopid (Acastoides) Trilobite - Foum Zguid, Morocco

Detailed Phacopid (Acastoides) Trilobite - Foum Zguid, Morocco #244277

This is an excellent, .95" long example of the small phacopid trilobite Acastoides zguilmensis from the Timrhanrhart Formation south of Foum Zguid, Morocco. It's very 3D and wonderfully prepared, just check out the tiny eye facets.

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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