†unranked clade Sulcimentisauria Martz and Small 2019 (ornithischian)

Reptilia - Ornithischia - Silesauridae

Full reference: J. W. Martz and B. J. Small. 2019. Non-dinosaurian dinosauromorphs from the Chinle Formation (Upper Triassic) of the Eagle Basin, northern Colorado: Dromomeron romeri (Lagerpetidae) and a new taxon, Kwanasaurus williamparkeri (Silesauridae). PeerJ 7:e7551:1-71

Parent taxon: Silesauridae according to A. O. Fonseca et al. 2024

See also Lovelace et al. 2025, Martz and Small 2019 and Mùˆller and Garcia 2020

Sister taxa: Amanasaurus, Asilisaurus, Gamatavus, Lewisuchinae, Lewisuchus, Soumyasaurus

Subtaxa: Diodorus Eucoelophysis Kwanasaurus Lutungutali Sacisaurus Silesaurus Technosaurus

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Ecology: ground dwelling herbivore

Distribution:

• Triassic of Brazil (1 collection), Morocco (1), Poland (3), United States (10: Colorado, New Mexico, Texas, Wyoming), Zambia (1)

Total: 16 collections each including a single occurrence

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