Invertebrate fossil sample, GSA Cenozoic number 18795. A fossil sample of the Miocene clam , Arca staminea, from the geologic unit Calvert, collected from the county of Calvert, MD, USA.
Summary
Invertebrate fossil sample, GSA Cenozoic number 18795. A fossil sample of the Miocene clam , Arca staminea, from the geologic unit Calvert, collected from the county of Calvert, MD, USA.