Denversaurus [SEP] parent taxon
Denversaurus" within an Edmontoniidae, the presumed sister group of the Nodosauridae within a Nodosauroidea that would not have been Ankylosauria but the last surviving Stegosauria. These hypotheses have not been confirmed by modern cladistic analysis. Today the "Denversaurus" material, whether it presents a separate species or is identical to "E. rugosidens" or "E. longiceps", is considered nodosaurid and ankylosaurian. Paul suggested that it were the direct descendant of "E. longiceps". Burns recovered "Denversaurus" as the sister species of "Panoplosaurus".
sp., even though he noted its similarity to "Edmontonia rugosidens". A number of workers treated "Denversaurus" as synonymous with either "E. rugosidens" or "E. longiceps", or alternatively a valid species of "Edmontonia", an "Edmontonia schlessmani".
In a SVP 2015 abstract, Michael Burns revisited the systematics of latest Cretaceous nodosaurids from the Western Interior. According to Burns, "Denversaurus" is a valid taxon based on its phylogenetic position.
Classification.
Bakker in 1988 placed "