Arkansas Minerals
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Set of x5 UV reactive Exogyra Ponderosa Clam shell Fossils, from the Marlbrook Marl formation (Cretaceous period), Hempstead County, Arkansas, USA. Beautifully fluorescent under longwave 365 nm UV light. You will receive these exact 5 specimens shown in the listing photographs/video.
they range in length from approx. 6 - 7.5 cm each
