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Remnants of the free cheeks can also be seen below the trilobite molt
*This approximate 5
Trilobite approximately 1 3/4" long
Utah Septarian Geode lapidary sculpted and beautifully polished into a Bison with an open visible hollow filled with shiny eye catching calcite crystals
Calcite and brown Aragonite partitioned Interior
Sponge Choia carteri Dinosaur Bone Remnants of the free cheeksVery Rare and Excellently preserved intact fossilized 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 5 1 2" x 4 1 2", 1. 80 lbs. Comes with metal stand. Choiidae is an extinct family of demosponges that lived from the Cambrian to the Lower Ordovician periods. These sponges