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Paraphyletic taxon: Family †Phiomyidae Wood, 1955 (mammal)
 Entity: 

Concise hierarchy

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

Original position

Questionably Hystricognathi (Infraorder) Tullberg, 1899

Current position

Phiomorpha (Parvorder) Lavocat, 1967 Ref: Marivaux et al., 2017: [6]; Barbière & Marivaux, in Cox & Hautier (eds.), 2015: fig. 4.3

Alternative positions

Hystricognathi (Infraorder) Tullberg, 1899 Ref: M.C. McKenna & S.K. Bell, 1997: 194.
Phiomorpha (Infraorder) Lavocat, 1962 Ref: Stevens et al., 2006: 407
Thryonomyoidea (Superfamily) Pocock, 1922 Ref: R.L. Carroll, 1988: 638.

Historical positions

Hystricognathi (Clade) Ref: M.A. O'Leary et al., 2013: table S2 (p. 87).
Hystricognathi (Infraorder) Tullberg, 1899 Ref: M.C. McKenna & S.K. Bell, 1997: 194.
Thryonomyoidea (Superfamily) Pocock, 1922 Ref: R.L. Carroll, 1988: 638.

Number of Subtaxa

2025 Available in Systema Naturae 2000 †2g
1989-present Systema Naturae 2000 [; †2g]
1997 M.C. McKenna & S.K. Bell [; †2g]
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Last updated: 21 Sep 2025