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Taxon:
Suborder †
Ophiacodontia
(Romer & Price, 1940)
(reptile)
Taxa
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Hierarchy
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Entity:
†Pelycosauria (Order) - pelycosaurs
..†Caseasauria (Suborder)
..†Edaphosauria (Suborder)
..†Haptodus (Genus)
..†Sphenacodontia (Suborder)
..†Varanosaurus (Genus)
..†Ophiacodontia (Suborder)
....†Ophiacodontidae (Family)
....†Varanopidae (Family)
Concise hierarchy
(Kingdom)
Animalia
-
(Phylum)
Chordata
-
(Order)
Pelycosauria
Current position
†
Pelycosauria
(Order)
Cope, 1878
Ref:
B. Grzimek et al., 1973 (1971)
: 590; [Benton, 2015: box 5.3 (p. 133)].
Historical positions
†
Pelycosauria
(Order)
Cope, 1878
Ref:
P. Uetz, [1995-]1996
: 30 Dec 1996.
†
Pelycosauria
(Order)
Cope, 1878
Ref:
B. Grzimek et al., 1973 (1971)
: 590.
Number of Subtaxa
1989-present
Systema Naturae 2000
†2f
[1995-]1996
P. Uetz
: 30 Dec 1996
[; †2f]
1973 (1971)
B. Grzimek et al.
: 590
[; †2f]
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Last updated:
21 Sep 2025