Polished Fossil Sea Urchin (Micraster)

This is a polished fossil sea urchin of the genus Micraster. This extinct genus thrived during the Late Cretaceous and is found throughout Europe and North America. I acquired a flat of these down at the Tucson Gem and Mineral show but unfortunately all the locality information was missing.
DETAILS
SPECIES
Micraster sp.
LOCATION
Unknown
SIZE
About 2-1/4" wide
CATEGORY
SUB CATEGORY
ITEM
#11693
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