Sanpasaurus

Sanpasaurus; Temporal range: Early Jurassic, 183 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
	Dorsal vertebra
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Dinosauria
Clade:	Saurischia
Clade:	†Sauropodomorpha
Clade:	†Sauropoda
Genus:	†Sanpasaurus; Young, 1944
Species:	†S. yaoi
Binomial name
	†Sanpasaurus yaoi; Young, 1944

Sanpasaurus ("Sanpa lizard") is a poorly known sauropod dinosaur from the Early Jurassic of Sichuan, China. The type species, S. yaoi, was described by Chung Chien Young, in 1944. The type remains, IVPP V.156, consists of 20 vertebrae, scapulae, forelimbs, and some hindlimb bones.^[1] Initially reported by Young as an ornithopod ornithischian,^[1] this specimen was unambiguously referred to Sauropoda^[2]^[3] in 2016 by McPhee et al.,^[4] later refined to a basal gravisaurian position by Pol et al. in 2020 and 2022, closely related to Vulcanodon and Tazoudasaurus.^[5]^[6] Sanpasaurus is known from remains recovered from the Maanshan Member of the Ziliujing Formation.

References

^ ^a ^b C.-C. Young. 1944. On the reptilian remains from Weiyuan, Szechuan, China. Bulletin of the Geological Society of China 24(3–4):187-205.
^ A mention buried at the bottom of a long discussion of Asian sauropods, on the Dinosaur Mailing List.
^ Upchurch, P. 1995. The evolutionary history of sauropod dinosaurs. Philosophical Transactions of the Royal Society of London, B, 349:365-390.
^ McPhee BW, Upchurch P, Mannion PD, Sullivan C, Butler RJ, Barrett PM. (2016) A revision of Sanpasaurus yaoi Young, 1944 from the Early Jurassic of China, and its relevance to the early evolution of Sauropoda (Dinosauria) PeerJ 4:e2578 https://doi.org/10.7717/peerj.2578
^ D. Pol; J. Ramezani; K. Gomez; J. L. Carballido; A. Paulina Carabajal; O. W. M. Rauhut; I. H. Escapa; N. R. Cúneo (2020). "Extinction of herbivorous dinosaurs linked to Early Jurassic global warming event". Proceedings of the Royal Society B: Biological Sciences. 287 (1939) 20202310. doi:10.1098/rspb.2020.2310. PMC 7739499. PMID 33203331. S2CID 226982302.
^ Pol, D.; Gomez, K.; Holwerda, F.H.; Rauhut, O.W.M.; Carballido, J.L. (2022). "Sauropods from the Early Jurassic of South America and the Radiation of Eusauropoda". In Otero, A.; Carballido, J.L.; Pol, D. (eds.). South American Sauropodomorph Dinosaurs. Record, Diversity and Evolution. Springer. pp. 131–163. doi:10.1007/978-3-030-95959-3. ISBN 978-3-030-95958-6. ISSN 2197-9596.