The describers found Domeykodactylus similar to both the Ctenochasmatidae and Dsungaripteridae in the crest; because of the elevated tooth sockets it was assigned to the latter group.
The researchers identified Domeykodactylus as sharing similarities with both Ctenochasmatidae and Dsungaripteridae, particularly in terms of its crest. Consequently, it was assigned to the latter group due to the distinctive characteristic of elevated tooth sockets.