Biology:Dianmeisaurus

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Short description: Extinct genus of reptiles

Dianmeisaurus
Temporal range: Middle Triassic, Anisian
Dianmeisaurus mutaensis (holotype).png
Holotype specimen of D. mutaensis, likely representing an immature individual
Scientific classification e
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Superorder: Sauropterygia
Suborder: [[Biology:|Pachypleurosauria]]
Genus: Dianmeisaurus
Shang & Li, 2015
Type species
Dianmeisaurus gracilis
Shang & Li, 2015
Other species
  • D. mutaensis Hu, Li & Liu, 2024

Dianmeisaurus is an extinct genus of pachypleurosaur from the Middle Triassic Guanling Formation in China . The type species is D. gracilis.[1] An additional species, D. mutaensis, was named in 2024 based on a small skeleton likely belonging to an immature individual.[2]

Classification

In their 2024 description of Dianmeisaurus mutaensis, Hu, Li & Liu recovered the two species of Dianmeisaurus as the sister taxon to Panzhousaurus in a clade of basally-branching pachypleurosaurs. In their analyses, they recovered the Pachypleurosauria as the sister taxon to the Nothosauroidea. The results of their phylogenetic analyses are shown in the cladogram below:[2]

Sauropterygia

Placodus

Eosauropterygia

Pistosauridae

Majiashanosaurus

Hanosaurus

Nothosauroidea

Pachypleurosauria

Panzhousaurus

Dianmeisaurus gracilis

Dianmeisaurus mutaensis

Dianopachysaurus

Dawazisaurus

Keichousaurus

Diandongosaurus

Odoiporosaurus

Anarosaurus

Dactylosaurus

Serpianosaurus

Neusticosaurus

Prosantosaurus

Qianxisaurus

Honghesaurus

References

  1. Qing-Hua Shang; Chun Li (2015). A new small-sized eosauropterygian (Diapsida: Sauropterygia) from the Middle Triassic of Luoping, Yunnan, southwestern China. doi:10.19615/j.cnki.1000-3118.2015.04.001. https://www.cnki.net/kcms/doi/10.19615/j.cnki.1000-3118.2015.04.001.html. Retrieved 2021-11-09. 
  2. 2.0 2.1 Hu, Yi-Wei; Li, Qiang; Liu, Jun (2024-01-05). "A new pachypleurosaur (Reptilia: Sauropterygia) from the Middle Triassic of southwestern China and its phylogenetic and biogeographic implications". Swiss Journal of Palaeontology 143 (1): 1. doi:10.1186/s13358-023-00292-4. ISSN 1664-2384. 

Wikidata ☰ Q109561670 entry