This image is of a Cynthiacetus maxwelli whale fossil on display at Mace Brown Museum of Natural History (August 2017). It dates to the Eocene Epoch (about 38-34 million years ago), Paleogene Period. The fossil is a composite of material found at various sites: Harleyville, South Carolina USA, Hinds County Mississippi USA, and Paracas Bay, Peru (Cynthiacetus peruvianus).
Learn more at their blog: http://blogs.cofc.edu/macebrownmuseum/