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]
| Dianmeisaurus Temporal range: Middle Triassic,
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| Holotype specimen of D. mutaensis, likely representing an immature individual | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Superorder: | †Sauropterygia |
| Suborder: | †Pachypleurosauria |
| Genus: | †Dianmeisaurus Shang & Li, 2015 |
| Type species | |
| †Dianmeisaurus gracilis Shang & Li, 2015
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| Other species | |
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Classification
editIn 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 |
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References
edit- ^ Qing-Hua Shang; Chun Li (2015). "A new small-sized eosauropterygian (Diapsida: Sauropterygia) from the Middle Triassic of Luoping, Yunnan, southwestern China". www.cnki.net. doi:10.19615/j.cnki.1000-3118.2015.04.001. Archived from the original on 2021-11-09. Retrieved 2021-11-09.
- ^ a b 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.