†family Thescelosauridae Sternberg 1937 (ornithischian)

Reptilia - Neornithischia - Thescelosauridae

Full reference: C. M. Sternberg. 1937. Classification of Thescelosaurus, with a description of a new species. Proceedings of the Geological Society of America 1936:375

Parent taxon: Neornithischia according to J. Jung et al. 2026

See also Barta and Norell 2021, Bonde et al. 2022, Brown et al. 2013, Herne et al. 2019, Kuhn 1964, Kuhn 1966, Madzia et al. 2018, Russell 1984, Tatarinov 1964, Thulborn 1974 and Thulborn 1977

Sister taxa: Enigmacursor, Jeholosauridae, Kulindadromeus, Minimocursor, Neornithopoda, Sanxiasaurus, Stormbergia, Yandusaurus

Subtaxa: Doolysaurus Haya Orodrominae Thescelosaurinae

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Type: Thescelosaurus

Ecology: ground dwelling herbivore

Distribution:

• Cretaceous of Argentina (1 collection), Canada (8: Alberta, Saskatchewan), Mongolia (2), South Korea (3), United States (38: Alaska, Alberta, Colorado, Idaho, Montana, Nevada, Utah, Wyoming)

Total: 52 collections each including a single occurrence

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