Invertebrate fossil, GSA Mesozoic number 3, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 1 specimen(s) of the Oyster Exogyra costata Say from the Cretaceous Ripley Formation in Undetermined County, Undetermined state, USA.
Summary
Invertebrate fossil, GSA Mesozoic number 3, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 1 specimen(s) of the Oyster Exogyra costata Say from the Cretaceous Ripley Formation in Undetermined County, Undetermined state, USA.
