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Monotypic taxon:
Genus †
Opisthias
Gilmore, 1909
(reptile)
Taxa
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Hierarchy
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Entity:
†Eilenodontinae (Subfamily)
..†Eilenodon (Genus)
..†Fraserosphenodon (Genus)
..†Kawasphenodon (Genus)
..†Pelecymala (Genus)
..†Priosphenodon (Genus)
..†Sphenotitan (Genus)
..†Toxolophosaurus (Genus)
..†Opisthias (Genus)
....†Opisthias rarus (Species)
Authorship
Original name
:
Gilmore, 1909. Proc. U.S. nat. Mus., 37, no. 1698, 35.
Etymology
Derived name
:
†
Opisthiamimus
(Genus)
DeMar, Jones & Carrano, 2022
Ref:
D.G. DeMar Jr. et al., 2022
: 5.
[
new
]
Synonyms
Including
:
†
Theretairus
(Genus)
Simpson, 1926
Ref:
R.L. Carroll, 1988
: App. (p. 616).
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Last updated:
28 Aug 2026