(Prorastomus_sirenoides,((Elephantidae,Phosphatherium_escuillei),(Pezosiren_portelli,((Sobrarbesiren,(Eotheroides_aegyptiacum,(Prototherium_ausetanum,(Prototherium_veronense,(((((Anomotherium_langewieschei,Miosiren_kocki),(Trichechus_inunguis,(Trichechus_manatus,Trichechus_senegalensis))),(Kaupitherium_gruelli,(Priscosiren_atlantica,(((Bharatisiren_indica,(((Bharatisiren_kachchhensis,(Domningia_sodhae,Dugong_dugon)),((Dioplotherium_manigaulti,(Dioplotherium_allisoni,Xenosiren_yucateca)),(ECOCHM_2491,Kutchisiren_cylindrica))),(Rytiodus_heali,(Corystosiren_varguezi,Rytiodus_capgrandi)))),(Crenatosiren_olseni,(Nanosiren_garciae,Nanosiren_sanchezi))),((Caribosiren_turneri,Metaxytherium_albifontanum),(Metaxytherium_krahuletzi,((Metaxytherium_crataegense,(Metaxytherium_arctodites,(Dusisiren_jordani,(Hydrodamalis_cuestae,Hydrodamalis_gigas)))),(Metaxytherium_floridanum,(Metaxytherium_medium,Metaxytherium_serresii))))))))),(Eotheroides_clavigerum,(Eotheroides_lambondrano,Eotheroides_sandersi))),(Halitherium_taulannense,Prototherium_intermedium)))))),(Ashokia_antiqua,(Protosiren_fraasi,(Protosiren_smithae,Libysiren_sickenbergi)))))));