Exogyra/Ilymatogyra Arietina
Cretaceous Period (Grayson) ~100 million year old fossils, found in Texas.
Common Name: Oyster Lower Valve; a.k.a. Ram's Horn
Ancient Ram's Horn Fossils
Updated: Jan 15, 2023
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Updated: Jan 15, 2023
Exogyra/Ilymatogyra Arietina
Cretaceous Period (Grayson) ~100 million year old fossils, found in Texas.
Common Name: Oyster Lower Valve; a.k.a. Ram's Horn
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