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†unranked clade Ornithischia Seeley 1888 (ornithischian)

Reptilia - Dinosauromorpha

PaleoDB taxon number: 91973

Alternative spelling: Ornithosuchia

Synonyms: Omosauria Seeley 1887 (no. 56554), Orthopoda Cope 1866 (no. 53390), Praedentata Marsh 1894 (no. 304261), Predentata Marsh 1894 (no. 52978)

Full reference: H. G. Seeley. 1888. On the classification of the fossil animals commonly named Dinosauria. Proceedings of the Royal Society of London 43:165-171

Parent taxon: Eudinosauria according to M. T. Carrano 2020

Sister taxa: Ancistrodon, Astrodon pusillus, Camposaurus arizonensis, Carnosauriformes, Cridotrisauropus, Dictyoolithidae, Diplodocia, Dystrophaeidae, Elephantopoides, Gigantosauropus, Gyrotrisauropus, Harpagosauria, Harpedactylus, Herreravia, Huanglongpus, Iguanodonichnus, Lagunculapes, Megalosauridae, Mirsosauropus, Neosauropus, Nyasasaurus, Omosaurus phillipsi, Ornithischiformes, Paleodinosauria, Phytodinosauria, Phytophagi, Polemarchus, Polyclonoolithidae, Postpubici, Praepubici, Prismatoolithidae, Saltosauropus, Saurischia, Sauropodichnus, Sillimanius, Sinoichnites, Steropoides, Tarsodactylus, Tarsoplectrus, Therophagi, Therosauria, Toyamasauripus, Tretospondylia, Xiphopeza, Youngoolithidae, Yunnanpus

Subtaxa: Alocodon, Apulosauripus, Armatosauria, Delatorrichnus, Enoplosauria, Fabrosauridae, Fabrosaurus, Ferganocephale, Genasauria, Gongbusaurus, Gregaripus, Heterodontosauridae, Heterodontosauriformes, Komlosaurus, Krzyzanowskisaurus, Laoyingshanpus, Laquintasaura, Lesothosauria, Ligabueichnium, Neornithischia, Notoceratops, Orbitoscuta, Pisanosaurus, Poposauria, Tacuarembovum, Trimucrodon, Xiaosaurus

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Ecology: ground dwelling herbivore