9.5" Large Elrathia Trilobite Cluster - Wheeler Shale, Utah

Large Elrathia Trilobite Cluster - Wheeler Shale, Utah #105595

This is a beautiful cluster of five, large Elrathia kingii trilobite fossils from the Wheeler Shale in Utah. The thick slab of shale measures 9.5x7.5" and the largest trilobite is 1.6" long (quite large for Elrathia). There are many other trilobite fragments visible on the surface of the rock. Prepared 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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