Dugongidae

Dugongidae is a family in the order of Sirenia. The family has one surviving species, the dugong (Dugong dugon), one recently extinct species, Steller's sea cow (Hydrodamalis gigas), and a number of extinct genera known from fossil records.

Taxonomy

• Family Dugongidae Genus †Anisosiren Genus †Caribosiren Genus †Indosiren Genus †Lentiarenium Genus †Kaupitherium Genus †Paralitherium Genus †Priscosiren Genus †Prohalicore Genus †Sirenavus Subfamily †Halitheriinae Genus †Halitherium (nomen dubium) Subfamily Dugonginae Genus †Bharatisiren Genus †Callistosiren Genus †Crenatosiren Genus †Corystosiren Genus †Culebratherium Genus †Dioplotherium Genus †Domningia Genus Dugong Species Dugong dugon, dugong Genus †Italosiren Genus †Kutchisiren Genus †Nanosiren Genus †Norosiren Genus †Rytiodus Genus †Salwasiren Genus †Xenosiren Subfamily †Metaxytheriinae Genus †Metaxytherium Subfamily †Hydrodamalinae Genus †Dusisiren Genus †Hydrodamalis Species †Hydrodamalis cuestae Species †Hydrodamalis spissa Species †Hydrodamalis gigas, Steller's sea cow

The genera Eosiren, Eotheroides, and Prototherium have been assigned to Halitheriinae in the past, but recent cladistic analysis recovers these genera as basal to the clade formed by Trichechidae and Dugongidae. Moreover, Halitheriinae is paraphyletic with respect to Dugonginae and Hydrodamalinae, and further use of the name should be discontinued because the type genus is based on a non-diagnostic tooth.

Phylogeny