image: This image shows the teeth (above and middle) and a side view of the lower jaw (below) of Heptodon, an ancient cousin to tapirs, found in early Eocene (52-million-year-old) rocks of northern British Columbia. This extinct mammal was about half the size of today's tapirs. view more
Credit: Jaelyn J. Eberle, Natalia Rybczynski, and David R. Greenwood