Invertebrate fossil, GSA Mesozoic number 1165, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 1 specimen(s) of the Oyster Exogyra costata Say from the Cretaceous Nachatoch Formation in Hempstead County, AR, USA.
Summary
Invertebrate fossil, GSA Mesozoic number 1165, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 1 specimen(s) of the Oyster Exogyra costata Say from the Cretaceous Nachatoch Formation in Hempstead County, AR, USA.