Invertebrate fossil, GSA Mesozoic number 1854, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 2 specimen(s) of the Oyster Gryphaea mutablis Morton from the Cretaceous Demopolis Chalk Formation in Marengo County, AL, USA.
Summary
Invertebrate fossil, GSA Mesozoic number 1854, from the GSA Mesozoic invertebrate paleontology collection. This specimen box contains 2 specimen(s) of the Oyster Gryphaea mutablis Morton from the Cretaceous Demopolis Chalk Formation in Marengo County, AL, USA.