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.
Domeykodactylus was found to possess traits comparable to those of both Ctenochasmatidae and Dsungaripteridae, specifically in relation to its crest. This led to its classification within the former group based on the elevated tooth sockets.