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there has been only one specimen found
Trilobite from the middle Cambrian Period (505 million years)
high quality Peronopsis interstrictus trilobite fossil
Utah Trilobites
*Formed in the Age of the Dinosaurs
Fossilized Cambrian Choia carteri Sponge Peronopsis there has been only oneVery Rare and Excellently preserved fossilized Spicules from a Choia sponge found in the Wheeler shale Utah West Desert. Age: Middle Cambrian (521 to 497 mya) Species Name: Choia carteri Order Family: Protomonaxonida Choiidae Phylum: Porifera Locality: Millard County, Utah Size: Approximately 7" x 6", 1. 7 lbs. Comes with metal stand. Sponges (Poriferans) are simple aquatic animals that attach to hard surfaces and feed and live by moving water through
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