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,[2][3] present in stratigraphic zones 2 and 4–6.[4]
Opisthias has been suggested to play 12 roles. Click below to see other actors suggested for each role, and vote for who you think would play the role best.
