Cordania & Kettneraspis Trilobites - Black Cat Mountain, Oklahoma

This is a unusual association of two types of trilobites from the Haragan Formation of Oklahoma. There is a .6" long Cordania falcata right next to a 1.15" long Kettneraspis williamsi. The Kettneraspis is partially exposed, but both trilobites have wonderful shell detail and good preparation.

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.
SOLD
DETAILS
SPECIES
Cordania falcata & Kettneraspis williamsi
LOCATION
Black Cat Mountain, Clarita, Oklahoma
FORMATION
Haragan Formation
SIZE
Cordania .6", Kettneraspis 1.15", Rock 3.8x3.3"
SUB CATEGORY
ITEM
#142086
GUARANTEE
We guarantee the authenticity of all of our
specimens. Read more about our
Authenticity Guarantee.