Sirenia

Duo manati.

Taxonomia

Regnum:	Animalia
Phylum:	Chordata
Classis:	Mammalia
Ordo:	Sirenia

Familiae

Dugongidae
Trichechidae

Sīrēnia (-orum, n.) sunt animalia mammifera herbivora aquae orariae.^? Adaptationes aquaticas evolverunt: bracchia habent, qui in remulos mutaverunt, crura carent, pingues sunt, et crania quae multum mutata sunt et quorum dentitio permaxime deminuta est. Mamillas subalares habent.

Trichechidae a Dugongidis forma et cranii et caudae variant.

Taxinomia

ORDO SIRENIA
- Familia Dugongidae
  - Dugon, Dugong dugon
  - Hydrodamalis, Hydrodamalis gigas (exstincta)
- Familia Trichechidae: manati
  - Manatus Caribbeanus, Trichechus manatus
  - Manatus Africanus, Trichechus senegalensis
  - Manatus Amazonensis, Trichechus inunguis

Clasifficatio

Ordo: Sirenia
- Familia Prorastomidae (Cope, 1889)
  - Genus: Pezosiren (Domning, 2001)
  - Genus: Prorastomus (Owen, 1855)
- Familia Protosirenidae
  - Genus: Protosiren (Abel, 1907)
- Familia: Dugongidae
  - Subfamilia: Halitheriinae
    - Genus: Anisotherium (Kordos, 1979)
    - Genus: Eosiren (paraphyletic) (Andrews, 1902)
    - Genus: Eotheroides (Trouessart, 1905)
    - Genus: Halitherium (paraphyletic) (Fitzinger, 1842)
    - Genus: Indosiren (Von Koenigswald, 1952)
    - Genus: Miodugong (Deraniyagala, 1969)
    - Genus: Paralitherium (Kordos, 1977)
    - Genus: Prohalicore (Flot, 1887)
    - Genus: Prototherium (paraphyletic) (De Zigno, 1887)
    - Genus: Sirenavus (Kretzoi, 1941)
  - Subfamilia Hydrodamalinae
    - Genus: Dusisiren (paraphyletic) (Domning, 1978)
    - Genus: Hydrodamalis (Retzius, 1794)
    - Genus: Metaxytherium (paraphyletic) (De Christol, 1844)
  - Subfamilia Dugonginae
    - Genus: Bharatisiren (Bajpai & Domning, 1997)
    - Genus: Caribosiren (Reinhard, 1959)
    - Genus: Corystosiren (Domning, 1990)
    - Genus: Crenatosiren (Domning, 1991)
    - Genus: Dioplotherium (Cope, 1883)
    - Genus: Dugong (Lacepede, 1799)
    - Genus: Rytiodus (Lartet, 1866)
    - Genus: Thalattosiren (Sickenburg, 1928)
    - Genus: Xenosiren (Domning, 1989)
- Familia Trichechidae
  - Subfamilia Miosireninae
    - Genus: Anomotherium (Siegfried, 1965)
    - Genus: Miosiren (Dollo, 1889)
  - Subfamilia: Trichechinae
    - Genus: Potamosiren (Reinhart, 1951)
    - Genus: Ribodon (Ameghino, 1883)
    - Genus: Trichechus (Linnaeus, 1758)