6.6" Elrathia Trilobite Cluster - Wheeler Shale, Utah

This is a cluster of 26 Elrathia kingii trilobites and a couple Bolaspidella housensis from the 505 million year old Wheeler Shale of Utah. The entire slab of shale measures 6.6x4" and is about 1 1/2" thick. The largest Elrathia (a negative) is 1.35" long. The piece has been beautifully cleaned with air abrasives.

Comes with a display stand.

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 & Bolaspidella housensis
LOCATION
U-Dig Quarry, House Range, Utah
FORMATION
Wheeler Shale
SIZE
Rock 6.6x4", Largest trilobite 1.35"
SUB CATEGORY
ITEM
#105577
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