†unranked clade Hadrosauriformes Sereno 1997 (ornithopod)

Reptilia - Ornithischia

Full reference: P. C. Sereno. 1997. The origin and evolution of dinosaurs. Annual Review of Earth and Planetary Sciences 25:435-489

Parent taxon: Styracosterna according to A. T. McDonald 2012

See also McDonald et al. 2010, McDonald et al. 2010, Sereno 1997, Sereno 1998, Sereno 1999, Shibata et al. 2015, VerdĂș et al. 2021, Wang et al. 2017 and You et al. 2005

Sister taxa: Calvarius, Cumnoria, Dakotadon, Delapparentia, Draconyx, Hippodraco, Iguanacolossus, Lanzhousaurus, Magnamanus, Napaisaurus, Riabininohadros, Theiophytalia

Subtaxa: Brighstoneus Hadrosauroidea Proa Siamodon

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Ecology: ground dwelling herbivore

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