This image is of an Odobenus rosmarus walrus fossil on display at Mace Brown Museum of Natural History (August 2017). It dates to the Pleistocene Epoch (about 200,000-100,000 years ago). The fossil was found in Alaska 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/