This image is of brachiopod fossils aka Anastrophia verneuili (Hall, 1857) on display at Mace Brown Museum of Natural History (August 2017). It was found in Coal County, Oklahoma USA and dates to the Late Devonian Period (380 million years ago).
The
Mace Brown Museum of Natural History is located at the College of
Charleston, 202 Calhoun Street, 2nd Floor, Charleston, South Carolina
29424.
Learn more at their blog: http://blogs.cofc.edu/macebrownmuseum/
