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Monotypic taxon: Family †Prorastomidae Cope, 1889 (mammal)
 Entity: 

Concise hierarchy

(Kingdom) Animalia - (Phylum) Chordata - (Class) Mammalia - (Order) Sirenia

Subsequent positions

Sirenia (Infraorder) Gill, 1872 Ref: M.C. McKenna & S.K. Bell, 1997: 493.

Current position

Sirenia (Order) Gill, 1872 Ref: B. Gardiner et al., 1989: 304; ZR(1995).

Alternative positions

Sirenia (Infraorder) Gill, 1872 Ref: M.C. McKenna & S.K. Bell, 1997: 493. [new position]

Historical positions

Sirenia (Infraorder) Gill, 1872 Ref: M.C. McKenna & S.K. Bell, 1997: 493. [new position]
Sirenia (Order) Gill, 1872 Ref: B. Gardiner et al., 1989: 304.
Sirenia (Order) Gill, 1872 Ref: R.L. Carroll, 1988: App. (p. 646).

Number of Subtaxa

2026 Available in Systema Naturae 2000 †1g;1s
1989-present Systema Naturae 2000: 24 Jul 2022 [; †1g;1s]
1997 M.C. McKenna & S.K. Bell [; †1g]
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Last updated: 28 Aug 2026