2.9" Detailed Crotalocephalina Trilobite - One Half Prepared

I specially requested to have some trilobites specimens prepared with only half of the trilobite exposed, while the other half remained fully encased in the limestone. These are an interesting demonstration to show, that yes these really are a fossil, found fully encased in hard limestone.

This particular trilobite is a 2.9" long Crotalocephalina collected near Atchana, Morocco. The exposed half is well prepared with excellent detail including 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 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.
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DETAILS
SPECIES
Crotalocephalina gibbus
LOCATION
Atchana, Morocco
FORMATION
Lhandar Formation
SIZE
2.9" long
SUB CATEGORY
ITEM
#235114
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