Invertebrate fossil, GSA Mesozoic number 1169, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 1 specimen(s) of the Oyster Exogyra costata Say from the Cretaceous Saratoga Chalk Formation in Howard County, AR, USA.
Summary
Invertebrate fossil, GSA Mesozoic number 1169, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 1 specimen(s) of the Oyster Exogyra costata Say from the Cretaceous Saratoga Chalk Formation in Howard County, AR, USA.