Trichechidae Subfamili †Miosireninae Genus †Anomotherium Genus †Miosiren Genus †Prohalicore Subfamili Trichechinae Genus †Potamosiren Genus Trichechus (Manatee/...

†Lentiarenium Genus †Kaupitherium Genus †Paralitherium Genus †Priscosiren Genus †Prohalicore Genus †Sirenavus Subfamili †Halitheriinae Genus †Halitherium (nomen dubium)...