Invertebrate fossil, GSA Mesozoic number 1858, 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 Sumter County, AL, USA.
Summary
Invertebrate fossil, GSA Mesozoic number 1858, 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 Sumter County, AL, USA.