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{{Short description|Extinct species of reptile}}
'''''Sanpasaurus''''' ("Sanpa lizard") is the name given to the mixed-up fossils of [[sauropod]] and [[ornithopod]] dinosaurs from the Middle [[Jurassic]]. The type species, ''S. yaoi'', was described by Young, in 1944. It is a [[nomen dubium]]. A second species assigned to the genus, ''S. imperfectus'', is also considered '''[[nomen dubium]'''. Parts of the fossils belong to animals from different genera, and as it now stands, ''Sanpasaurus'' is invalid.
{{Speciesbox
| fossil_range = [[Early Jurassic]], {{fossilrange|183}}
| image = Sanpasaurus dorsal vertebra.png
| image_caption = Dorsal vertebra
| genus = Sanpasaurus
| parent_authority = [[Yang Zhongjian|Young]], 1944
| species = yaoi
| authority = [[Yang Zhongjian|Young]], 1944
}}
[[File:Chevron of Sanpasaurus.png|thumb|left|[[Chevron (anatomy)|Chevron]] of ''Sanpasaurus'' in anterior view (A), posterior view (B), and lateral view (C), with 5-cm black bar for scale.]]

'''''Sanpasaurus''''' ("Sanpa lizard") is a poorly known [[sauropod]] [[dinosaur]] from the [[Early Jurassic|Early]] to [[Late Jurassic]] of [[Sichuan]], [[People's Republic of China|China]]. The [[type species]], '''''S. yaoi''''', was described by [[Yang Zhongjian|Chung Chien Young]], in 1944. The [[holotype|type remains]], '''IVPP V.156''', consists of 20 [[vertebra]]e, [[scapula]]e, forelimbs, and some hindlimb bones.<ref name="young1944">C.-C. Young. 1944. On the reptilian remains from Weiyuan, Szechuan, China. ''Bulletin of the Geological Society of China'' '''24'''(3–4):187-205.</ref>
Initially reported by Young as an [[ornithopod]] [[ornithischian]],<ref name="young1944"/> this specimen was unambiguously referred to [[Sauropoda]]<ref name="dml">[http://dml.cmnh.org/2002Jun/msg00472.html A mention buried at the bottom] of a long discussion of Asian sauropods, on the Dinosaur Mailing List.</ref><ref name="upchurch">Upchurch, P. 1995. The evolutionary history of sauropod dinosaurs. ''Philosophical Transactions of the Royal Society of London, B'', 349:365-390.</ref> in 2016 by McPhee ''et al.'',<ref name="mcpheeetal">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</ref> later refined to a basal [[gravisauria]]n position by Pol ''et al.'' in 2020 and 2022, closely related to ''[[Vulcanodon]]'' and ''[[Tazoudasaurus]]''.<ref name=Bagualia>{{cite journal |author1=D. Pol |author2=J. Ramezani |author3=K. Gomez |author4=J. L. Carballido |author5=A. Paulina Carabajal |author6=O. W. M. Rauhut |author7=I. H. Escapa |author8=N. R. Cúneo |year=2020 |title=Extinction of herbivorous dinosaurs linked to Early Jurassic global warming event |journal=Proceedings of the Royal Society B: Biological Sciences |volume=287 |issue=1939 |pages=Article ID 20202310 |doi=10.1098/rspb.2020.2310 |pmid=33203331 |s2cid=226982302 |doi-access=free |pmc=7739499 }}</ref><ref name="pol2022">{{cite book|last=Pol|first=D.|last2=Gomez|first2=K.|last3=Holwerda|first3=F.H.|last4=Rauhut|first4=O.W.M.|last5=Carballido|first5=J.L.|year=2022|chapter=Sauropods from the Early Jurassic of South America and the Radiation of Eusauropoda|pages=131–163|editor-last=Otero|editor-first=A.|editor2-last=Carballido|editor2-first=J.L.|editor3-last=Pol|editor3-first=D.|title=South American Sauropodomorph Dinosaurs. Record, Diversity and Evolution|publisher=Springer|isbn=978-3-030-95958-6|doi=10.1007/978-3-030-95959-3|issn=2197-9596}}</ref> ''Sanpasaurus'' is known from remains recovered from the Maanshan Member of the [[Ziliujing Formation]].


==References==
==References==
{{Reflist}}
* http://www.dinoruss.com/de_4/5a92ea1.htm

* http://72.14.203.104/search?q=cache:-VaLu9XQyFgJ:dinosauricon.com/genera/sanpasaurus.html+Sanpasaurus&hl=en&gl=us&ct=clnk&cd=3
{{Portal|Dinosaurs}}
{{Sauropodomorpha|B.}}
{{Taxonbar|from=Q519430}}

⚫
[[Category:Early Jurassic dinosaurs of Asia]]
[[Category:Sauropods]]
[[Category:Taxa named by Yang Zhongjian]]
[[Category:Fossil taxa described in 1944]]
[[Category:Paleontology in Sichuan]]



{{Sauropodomorph-stub}}
⚫
[[Category:Invalid dinosaurs]]
{{Dinosaur-stub}}

Latest revision as of 21:26, 11 April 2024

Sanpasaurus
Temporal range: Early Jurassic, 183 Ma
↓
Dorsal vertebra
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Saurischia
Clade: †Sauropodomorpha
Clade: †Sauropoda
Genus: †Sanpasaurus
Young, 1944
Species:
†S. yaoi
Binomial name
†Sanpasaurus yaoi
Young, 1944
Chevron of Sanpasaurus in anterior view (A), posterior view (B), and lateral view (C), with 5-cm black bar for scale.

Sanpasaurus ("Sanpa lizard") is a poorly known sauropod dinosaur from the Early to Late 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[edit]

  1. ^ 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.
  2. ^ A mention buried at the bottom of a long discussion of Asian sauropods, on the Dinosaur Mailing List.
  3. ^ Upchurch, P. 1995. The evolutionary history of sauropod dinosaurs. Philosophical Transactions of the Royal Society of London, B, 349:365-390.
  4. ^ 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
  5. ^ 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): Article ID 20202310. doi:10.1098/rspb.2020.2310. PMC 7739499. PMID 33203331. S2CID 226982302.
  6. ^ 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.


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