Triple Austerops Trilobite - Jorf, Morocco

This is a trio of nicely preserved phacopid trilobites from Jorf. The two smaller ones look like Austerops smoothops, the other one appears to be a different species.

The rock from the Jorf area is extremely hard with almost a glass-like texture to it. This makes it very time consuming to prepare compared to other localities. The shell tends to be transluscent so the trilobites take on much of the color of the rock underneath.

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 described species, filling nearly every evolutionary niche. Due in large part to a hard exoskeleton (shell), they left a excellent fossil record.
Jorf, Morocco
2.4", 1.45" & 1.4", on 5.3x4" rock
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