These images are of an odontocete whale-like fossils(?) on display at Mace Brown Museum of Natural History (August 2017). It dates to the Oligocene Epoch (about 28-26 million years ago), Paleogene Period.
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/
