the uniquely foldable teeth indicate that "andersonerpeton" is an aistopod, as these teeth are also seen in "coloraderpeton" and "oestocephalus", but no other tetrapods until the appearance of snakes in the cretaceous period. in addition, the mandible was smooth and wide, similar to that of most aistopods. however, in many other features the jaw of "andersonerpeton" closely resembles early tetrapod relatives such as "elginerpeton". these include the arrangement of teeth and denticles on the parasympheseal and coronoid bones, as well as labyrinthine marginal teeth. the possible presence of denticles on the dentary next to the tooth row is particularly significant, as these are present in many tetrapodomorph fish but completely lacking in all but the earliest four-limbed vertebrates, with "elginerpeton" believed to have been the last known animal to have possessed such a feature. overall, "andersonerpeton" seems to bridge a gap between stem-tetrapods and aistopods. this classification scheme contrasts with traditional interpretations of aistopods forming a group called lepospondyli with animals like "diplocaulus" and microsaurs, which are almost always considered true crown-tetrapods. however, the idea that aistopods branched off from the tetrapodomorph family tree much earlier than other lepospondyls has been supported by some analyses, such as a 2017 study on the braincase of "lethiscus", which was considered to have been the most "primitive" aistopod prior to the naming of "andersonerpeton".