Hadrosauroidea is a clade or superfamily of ornithischian dinosaurs that includes the "duck-billed" dinosaurs, or Hadrosauridae, and all dinosaurs more...

plesiomorphic (ancestral) anatomical features confidently place it within the Hadrosauroidea, it still demonstrates apomorphic (derived) features of later-diverging...

[citation needed] Regarding hadrosaurs, one of the more basal members of Hadrosauroidea, the Chinese genus Bolong, is estimated to have been around 200 kilograms...

[citation needed] Recent maximum parsimony-based phylogenetic analyses of Hadrosauroidea from Xing and colleagues recovered a stable sister group relationship...

Iguanodontidae Hadrosauroidea...

iguanodontian ornithopods, defined in 2014 by David B. Norman to divide Hadrosauroidea into the basal taxa with compressed manual bones and a pollex, and the...

traditional "iguanodontids" are now included in the more inclusive group Hadrosauroidea.[citation needed] Iguanodontia was originally phylogenetically defined...

Hadrosauroidea ...

Hypselospinus Jinzhousaurus Mantellisaurus Morelladon Ouranosaurus Iguanodontidae Barilium? Comptonatus Iguanodon Mantellisaurus? Hadrosauroidea see below↓...

instead placed in the clade Hadrosauriformes, closely related to the Hadrosauroidea, which contains the Hadrosauridae (also known as "duck-billed dinosaurs")...