 It was suggested that "Doratorhynchus" was a basal member of Azhdarchidae.However, in 1995 Stafford Howse and Andrew R. Milner concluded that "Doratorhynchus" is a "nomen vanum" because they noted that the phalanx was not diagnostic enough anyway and only assignable to Pterodactyloidea "incertae sedis".They assigned CAMSM J.5339 to "Gnathosaurus" as "G. macrurus" and CAMSM J.5340 to an indeterminate ctenochasmatid.