Comparison of even-toed ungulate and cetaceans genetic material has shown that the closest living relatives of whales and hippopotamuses is the paraphyletic group Artiodactyla. Dan Graur and Desmond Higgins were among the first to come to this conclusion, and included a paper published in 1994.
Definition of roundâtrip. : a trip to a place and back usually over the same route.
âAround the Blockâ â West Yellowstone (64 miles round trip) This 64-mile round tripâcalled âthe blockâ among local residentsâtravels through two states, over two mountain passes, and winds around three lakes. It also features gorgeous scenery and the best wildlife spotting opportunities.