Dvidalins are a clade of takmid draconiforms. They are the closest evolutionary relatives of the takmins - the takmar and xtauh.

Dvidalins are distinguished from their takmin cousins by being more adapted to grasping and climbing. All of them have dexterous hands with opposable thumbs, and some, especially the arboreal ones, also have feet capable of grasping. Their wings have become less powerful since their evolutionary separation from the takmins, to the point where they are either vestigial or (as with the sikirin) sufficient for gliding but not true flight of any length.

Known dvidalin species include the sophont orghysh and the bright but non-sophont sikirin.