Deinodryinus? aptianus was first studied by the paleoentomologists Adalgisa Guglielmino and Massimo Olmi both of the University of Tuscia in collaboration with Alexandr Rasnitsyn of the Paleontological Institute, Russian Academy of Sciences.
Deinodryinus areolatus is known only from a single fossil, the holotype, specimen number PIN No. 964/60, which is housed in the A.A. Borissiak Paleontological Institute, Russian Academy of Sciences, in Moscow.