Pair Of Cyphaspis Carrolli Trilobites - Oklahoma

Cyphaspis carrolli is a fairly scarce trilobite to find in the Haragan Formation, partially due to its small size. There are two specimens of this diminutive trilobite laying on top of each other. It's the first double I've seen of the species.

The Black Cat Mountain Quarry produces a limited number of arguably the most beautiful trilobites in the United States each year. Each specimen is meticulously prepared by quarry owner Bob Carroll under microscope to expose the smallest details. This is a very time consuming process, taking many hours, but yields spectacular results.

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.
Cyphaspis carrolli
Clarita, Oklahoma
Haragan Formation
.6" long each
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