Mesonychid Andrewsarchus Ambulocetus Ambulocetus
Mesonychid
Andrewsarchus
Ambulocetus
Ambulocetus
Pakicetus
Pakicetus
Rodhocetus
Rodhocetus
Basilosaurus
Basilosaurus
Whale evolution
Rodhocetus
Australopithecus
Homo habilis
Fig. 21.15
Homo neanderthalensis
Brian Sykes