| Dianmeisaurus Temporal range: Middle Triassic, Anisian PreꞒ Ꞓ O S D C P T J K Pg N | |
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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 | |
| Other species | |
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Dianmeisaurus is an extinct genus of pachypleurosaur from the Middle Triassic Guanling Formation in China. The type species is D. gracilis. An additional species, D. mutaensis, was named in 2024 based on a small skeleton likely belonging to an immature individual.
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:
| Sauropterygia |
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References
- 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.
- ^ 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.
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| Taxon identifiers | |
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| Dianmeisaurus | |