†family Spheroolithidae Zhao 1979 (ornithopod)

Reptilia - Ornithischia - Spheroolithidae

Full reference: Z. Zhao. 1979. [Advances in the study of fossil dinosaur eggs in our country]. Mesozoic and Cenozoic red beds of South China; selected papers from the field conference on the South China Cretaceous-Early Tertiary red beds. Science Press, Beijing 330-340

Parent taxon: Hadrosauroidea according to K. E. Mikhailov 2000

See also Mikhailov 1997, Mikhailov et al. 1994 and Zhao 1994

Sister taxa: Bactrosaurus, Batyrosaurus, Cedrorestes, Claosaurus, Datonglong, Eolambia, Equijubus, Fukuisaurus, Fylax, Gilmoreosaurus, Gobihadros, Gongpoquansaurus, Gonkoken, Hadrosauridae, Huehuecanauhtlus, Iguanodon hillii, Jeyawati, Jintasaurus, Koshisaurus, Levnesovia, Morelladon, Nanningosaurus, Nanyangosaurus, Ovaloolithidae, Penelopognathus, Plesiohadros, Portellsaurus, Probactrosaurus, Protohadros, Qianjiangsaurus, Ratchasimasaurus, Shuangmiaosaurus, Sirindhorna, Tanius, Telmatosaurus, Tethyshadros, Trachodon cantabrigiensis, Xuwulong, Yunganglong, Zhanghenglong, Zuoyunlong

Subtaxa: Guegoolithus Paraspheroolithus Spheroolithus

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Ecology: ground dwelling herbivore

Distribution:

• Cretaceous of Argentina (1 collection), Canada (5: Alberta), China (27), India (2), Japan (1), Kazakhstan (1), Mexico (4), Mongolia (18), the Russian Federation (1), Spain (6), United States (11: Montana, Utah)

Total: 77 collections including 83 occurrences

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