7" Trimerus Trilobite - Rochester Shale, New York

This is a bargain specimen of an uncommon Trimerus delphinocephalus trilobite from the Rochester Shale of New York. It would be about 7" long if outstretched but it's preserved on it's side and slightly compressed, hence the bargain price.

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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DETAILS
SPECIES
Trimerus delphinocephalus
LOCATION
Caleb's Quarry, Middleport, New York
FORMATION
Rochester Shale
SIZE
7" long (if outstretched), rock 6.2x5.5"
SUB CATEGORY
ITEM
#68337
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