SAURISCHIA SEELEY, 1887

Barrett, Paul M., Upchurch, P., Zhou, X. - D. & Wang, X. - L., 2007, The skull of Yunnanosaurus huangi Young, 1942 (Dinosauria: Prosauropoda) from the Lower Lufeng Formation (Lower Jurassic) of Yunnan, China, Zoological Journal of the Linnean Society 150 (2), pp. 319-341 : 320

SAURISCHIA SEELEY, 1887

SAUROPODOMORPHA VON HUENE, 1932 PROSAUROPODA VON HUENE, 1920 YUNNANOSAURUS YOUNG, 1942 TYPE SPECIES. YUNNANOSAURUS HUANGI YOUNG (1942)

Emended diagnosis: As for type species (see below).

Distribution: Dark Red Beds of the Lower Lufeng Formation (Lower Jurassic), Lufeng County, Yunnan Province, China.

Comments: Young (1951) erected a second species, Yunnanosaurus robustus , based on a partial skeleton including cranial remains (IVPP V94). Although Steel (1970) regarded Y. huangi and Y. robustus as separate valid species, most authors have regarded the latter as either a junior subjective synonym of Y. huangi (e.g. Galton, 1990; Galton & Upchurch, 2004) or L. huenei (e.g. Rozhdestvensky, 1965). In order to stabilize the genus, we base our diagnosis of Yunnanosaurus on the type species only. The validity of Y. robustus and its referral to Yunnanosaurus will be addressed elsewhere.