Two Beautiful Dikelokephalina Trilobites With Echinoderm - Morocco

This is a pair of beautifully preserved, Dikelokephalina brenchleyi trilobites from the Fezouata Shale of Morocco. One measures 6.4" and the other 5.9" on a 18.5 x 10" slab of shale. There is also an unidentified eocrinoid on the plate along with the tail of a third trilobite.

Trilobites of the genus Dikelokephalina from Ordovician Gondwana and Avalonia

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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