Exceptional "Devil Horned" Cyphaspis Trilobite Cluster

This is an very nice cluster of four complete Cyphaspis walteri trilobites and a couple of partials. Very good preparation work on this piece, and one of the more aesthetic multiple plates of these I've seen.

This species was finally formally described in 2014. A link to the paper can be found below.

“Devil horned” Cyphaspis (Trilobita, Otarioninae): examples from the Middle
Devonian of the Ardennes (Belgium), Eifel (Germany) and Ma’der (Morocco)

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 with over 25k currently described species, filling nearly every evolutionary niche. Due in large part to a hard exoskeleton (shell), they left an excellent fossil record.
Cyphaspis walteri
Mrakib, Morocco
Bou Dib Formation
Largest 1.45", Rock 5.9x4.1"
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