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.
Baggage basics. 1. Baggage fees are per bag and per direction. So one way = one charge. Round trip = two charges. If your flight has a connection, bags will generally transfer from flight to flight and no additional fees will apply.