Hydrodamalinae
Hydrodamilinae est subfamilia mammalium sirenium exstincta.

Systema taxinomicum Animalis 
 Imperium: Eucaryota
 Regnum: Animalia
 Gradus: Metazoa
 Subgradus: Eumetazoa
 Subregnum: Bilateria
 Infraregnum: Eucoelomata
 Supraphylum: Deuterostomia
 Infraphylum: Chordonia
 Phylum: Chordata
 Subphylum: Vertebrata
 Infraphylum: Gnathostomata
 Supraclassis: Tetrapoda
 Infraclassis: Amniota
 Ramus: Mammaliaformes
 Classis: Mammalia
 Subclassis: Theriiformes
 Infraclassis: Holotheria
 Supralegion: Trechnotheria
 Legion: Cladotheria
 Sublegion: Zatheria
 Infralegion: Tribosphenida
 Supracohort: Theria
 Cohort: Placentalia
 Superordo: Afrotheria
 Ordo: Sirenia
 Familia: Dugongidae
 Subfamilia: Hydrodamalinae
 Genus: Dusisiren (Domning, 1978) 
 Genus: Hydrodamalis (Retzius, 1794) 
 Genus: Metaxytherium (De Christol, 1844)

Notae 
 Shoshani, Jeheskel (November 16, 2005). Wilson, D. E., and Reeder, D. M. (eds) Mammal Species of the World, 3rd edition, Johns Hopkins University Press, 92-93 

Sirenia