Biology:Wumengosaurus

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Short description: Extinct genus of reptiles


Wumengosaurus
Temporal range: Anisian, 247.2–242 Ma
Wumengosaurus NT small.jpg
Scientific classification e
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Superorder: Sauropterygia
Clade: Eosauropterygia
Genus: Wumengosaurus
Jiang et al., 2008
Type species
Wumengosaurus delicatomandibularis
Jiang et al., 2008
Other species
  • W. rotundicarpus Qin et al. 2021

Wumengosaurus is an extinct aquatic reptile from the Middle Triassic (late Anisian stage) Guanling Formation of Guizhou, southwestern China . It was originally described as a basal eosauropterygian and usually is recovered as such by phylogenetic analyses,[1][2][3] although one phylogeny has placed it as the sister taxon to Ichthyosauromorpha while refraining from a formal re-positioning.[4] It was a relatively small reptile, measuring 95.5–130.5 cm (3.13–4.28 ft) in total body length.[1]

In 2021, Qin et al. described an additional specimen from Guizhou (Panzhou District) as a new species of Wumengosaurus, W. rotundicarpus.[5]

Classification

In the 2023 description of Luopingosaurus, Xu et al. recovered Wumengosaurus as a derived pachypleurosaurid, as the sister taxon to the clade formed by Luopingosaurus and Honghesaurus. The results of their phylogenetic analyses are shown in the cladogram below:[6]

Sauropterygia

Placodontia

Hanosaurus

Eosauropterygia
Pachypleurosauroidea

Majiashanosaurus

Diandongosaurus

Dianmeisaurus

Dawazisaurus

Panzhousaurus

Keichousauridae

Dianopachysaurus

Keichousaurus

Pachypleurosauridae

Dactylosaurus

Anarosaurus

Odoiporosaurus

Serpianosaurus

Neusticosaurus

Prosantosaurus

Qianxisaurus

Wumengosaurus

Luopingosaurus

Honghesaurus

Eusauropterygia

Nothosauroidea

Pistosauroidea

References

  1. 1.0 1.1 Jiang, Da-Yong; Rieppel, Olivier; Motani, Ryosuke; Hao, Wei-Cheng; Sun, Yuan-Lin; Schmitz, Lars; Sun, Zuo-Yu (2008). "A New Middle Triassic Eosauropterygian (Reptilia, Sauropterygia) from Southwestern China". Journal of Vertebrate Paleontology 28 (4): 1055–1062. doi:10.1671/0272-4634-28.4.1055. Bibcode2008JVPal..28.1055J. 
  2. Cheng, Y. N.; Wu, X. C.; Sato, T.; Shan, H. Y. (2012). "A new eosauropterygian (Diapsida, Sauropterygia) from the Triassic of China". Journal of Vertebrate Paleontology 32 (6): 1335. doi:10.1080/02724634.2012.695983. Bibcode2012JVPal..32.1335C. 
  3. Da-Yong Jiang; Ryosuke Motani; Andrea Tintori; Olivier Rieppel; Guan-Bao Chen; Jian-Dong Huang; Rong Zhang; Zuo-Yu Sun et al. (2014). "The Early Triassic eosauropterygian Majiashanosaurus discocoracoidis, gen. et sp. nov. (Reptilia, Sauropterygia), from Chaohu, Anhui Province, People's Republic of China". Journal of Vertebrate Paleontology 34 (5): 1044–1052. doi:10.1080/02724634.2014.846264. 
  4. Chen, Xiao-hong; Motani, Ryosuke; Long, Chen; Jiang, Da-Yong; Rieppel, Olivier (2014). "The enigmatic marine reptile Nanchangosaurus from the Lower Triassic of Hubei, China and the phylogenetic affinities of Hupehsuchia". PLOS ONE 9 (7): e102361. doi:10.1371/journal.pone.0102361. PMID 25014493. Bibcode2014PLoSO...9j2361C. 
  5. Qin, Yanjiao; He, Xiao; Luo, Yongming; Hu, Xinrui; Jiang, Liangbing; Deng, Xiaojie; Shi, Zhenhua; Ran, Weiyu (2021). "A New Species of Wumengosaurus from Panxian Fauna in Middle Triassic of Guizhou Province" (in lzh). Guizhou Geology 38 (4): 373–381. ISSN 1000-5943. https://jglobal.jst.go.jp/detail?JGLOBAL_ID=202202267969890152. 
  6. Xu, G.-H.; Shang, Q.-H.; Wang, W.; Ren, Y.; Lei, H.; Liao, J.-L.; Zhao, L.-J.; Li, C. (2023). "A new long-snouted marine reptile from the Middle Triassic of China illuminates pachypleurosauroid evolution". Scientific Reports 13 (1): 16. doi:10.1038/s41598-022-24930-y. ISSN 2045-2322. PMID 36604433. Bibcode2023NatSR..13...16X. 

Wikidata ☰ Q8039226 entry