Cluster Of Elrathia Trilobites In Shale - Utah

This a group of small Elrathia kingii trilobite specimens from the 505 million year old Wheeler Shale of Utah. They are preserved and prepared on the shale they were found in. The largest trilobite is .42" long. There are many parts of other specimens on this piece, as well as two possible enrolled specimens which are fairly unusual to find.

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
Elrathia kingii
LOCATION
House Range, Utah
FORMATION
Wheeler Shale
SIZE
.42" longest trilobite
SUB CATEGORY
ITEM
#61871
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