Hadrosauroidea
| Hadrosauroids Temporal range: Early-Late Cretaceous, 130–66 Ma |
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| Holotype skeleton of Tethyshadros insularis | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Dinosauria |
| Order: | †Ornithischia |
| Suborder: | †Ornithopoda |
| Clade: | †Hadrosauriformes |
| Superfamily: |
†Hadrosauroidea Cope, 1869 |
| Type species | |
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†Hadrosaurus foulkii Leidy, 1858 |
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| Families | |
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†Hadrosauridae |
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| Synonyms | |
†Hadrosauridae
And see text.
Hadrosauroidea is a clade or superfamily of ornithischian dinosaurs that includes the "duck-billed" dinosaurs, or hadrosaurids, and all dinosaurs more closely related to them than to Iguanodon. Many primitive hadrosauroids, such as the sail-backed Ouranosaurus, have traditionally been included in a paraphyletic (unnatural grouping) "Iguanodontidae". With cladistic analysis, the traditional Iguanodontidae has been largely disbanded, and probably includes only Iguanodon and perhaps its closest relatives.
The following taxonomy follows Ramírez-Velasco et al, 2012 unless otherwise noted.
The cladogram below follows an analysis by Wu Wenhao and Pascal Godefroit (2012).
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