5" Parahomalonotus calvus Trilobite - Foum Zguid, Morocco

This is a species not normally seen from the Timrhanrhart Formation, Parahomalonotus calvus. It's 5" long, and would have been significantly longer, but it's been heavily compressed lengthwise. Nearly all of the specimens from this layer show heavy compression or distortion based on their orientation.

Please Note: I believe the front half and back half of this trilobite maybe a composite of two partial specimens. There is a suspicious crack around the forth segment, and the segment count appears to be 12 not 13, but it also looks like there might be a segment pushed under the head. Otherwise there is only some minimal shell restoration on the left hand side. Due to the possible composited nature of this trilobite, the price is significantly discount.

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.

Parahomalonotus calvus
Foum Zguid, Morocco
Timrhanrhart Formation
5" long
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