RARE Choia Sponge Spicules Mortality PlateVery Rare and Excellently preserved fossilized Spicules from a Choia sponge found in the Wheeler shale Utah West Desert. Utah Cambrian trilobite fossils and remnants also present as well as trilobite imprints. 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 2", 2. 5 lbs. Comes with metal stand. The preserved skeletal