Opisthias
Opisthias is a genus of sphenodont reptile. The type species, Opisthias rarus, is known from the Late Jurassic (Kimmeridgian-Tithonian) Morrison Formation of western North America, present in stratigraphic zones 2 and 4–6.
23790193
1113124175
Gilmore 1909
(Possible Berriasian record)
Jaw of Opisthias rarus
Opisthias
Opisthias rarus
Gilmore, 1905
Opisthias is a genus of sphenodont reptile. The type species, Opisthias rarus, is known from the Late Jurassic (Kimmeridgian-Tithonian) Morrison Formation of western North America, present in stratigraphic zones 2 and 4–6.
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