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Stem group:
Order †
Pelycosauria
Cope, 1878
- pelycosaurs
(reptile)
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Entity:
Synapsida (Clade)
..Therapsida (Clade)
..†Pelycosauria (Order) - pelycosaurs
....†Caseasauria (Suborder)
....†Edaphosauria (Suborder)
....†Haptodus (Genus)
....†Ophiacodontia (Suborder)
....†Sphenacodontia (Suborder)
....[†Varanopseidae] (Family)
....†Varanosaurus (Genus)
Synonyms
Synonymous name
:
Theromorpha
(Order)
(Cope, 1878)
Ref:
P. Uetz, [1995-]1996
Including
:
†
Edaphosauria
(Suborder)
Cope, 1882
Including
:
†
Ophiacodontia
(Suborder)
(Romer & Price, 1940)
Including
:
†
Sphenacodontia
(Suborder)
Marsh, 1878
Vernacular Names (English)
Full name
:
pelycosaurs
©2004-2025 Universal Taxonomic Services
Last updated:
21 Sep 2025