This image is of pygmy sperm whale (family Kogiidae) ear bone fossils on display at Mace Brown Museum of Natural History (August 2017). They date to the Late Miocene Epoch (about 11-5.3 million years ago), Neogene Period. The fossils were found in Hawthorn Formation of Bone Valley Florida USA.
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/
