WAcrophocaWAdinotheriumWAmerhippusWArchaeogeryonWArctotheriumWAristonectesWAstrapotheriumWAtacamatitanWBaculitesWBorhyaenaWBrachydelphisWCalappiliaWChilesaurusWCladophlebisWCladosictisWCuvieroniusWDusicyon avusWEocardiaWEuclastesWList of gomphothere fossils in South AmericaWGyrodusWHemisyntrachelusWHippidionWHomalodotheriumWHondonadiaWLeedsichthysWMacraucheniaWMegatheriumWMylodonWNematheriumWNesodonWOdobenocetopsWOlcostephanusWPachyrukhosWPelagornisWPeltephilusWPlatypterygiusWProthylacinusWProtypotheriumWScelidodonWStriatolamiaWThalassocnusWTheosodonWVarasichthysWZamites