Dvellecanus carrolli was named by Szostakiwskyj et al. (2015) [Small recumbirostran with the following combination of characters: exoccipitals and basioccipital fused; snout strongly downturned, with premaxilla-nasal suture displaced ventral to cultriform process of parasphenoid; coronoid process exposed in lateral view; anterior process of coronoid short; nasal pair wider than frontal pair; snout rounded in dorsal view; prefrontal approaching external naris; dorsal lamina of lacrimal level with dorsal margin of orbit; ventral process of lacrimal approaches suborbital process of jugal; postorbital large; transverse flange of pterygoid entirely concave; retroarticular process absent; median anterior braincase bone absent; sphenethmoids with short ventral suture to pleurosphenoids; lateral ascending processes of supraoccipital short and squared-off.]. Its type specimen is UCMP 202940, a partial skull (Partial skull with right cheek removed to expose braincase), and it is a 3D body fossil. Its type locality is Norman, which is in a Kungurian fluvial-lacustrine shale/shale in the Hennessey Formation of Oklahoma.