Erlianhyus
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| Erlianhyus Temporal range:
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Artiodactyla |
| Clade: | Cetancodontamorpha |
| Genus: | †Erlianhyus Li & Li, 2021 |
| Type species | |
| Erlianhyus primitivus Li & Li, 2021
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Erlianhyus is a genus of cetancodontamorph artiodactyl that lived during the Middle Eocene in China. It is monotypic and known from one species, E. primitivus.[1]
Taxonomy
[edit]The holotype of Erlianhyus (IVPP V 28275) was discovered in strata from the Irdin Manha Formation. Its binomial name is derived from the Erlian Basin, in which it was discovered, and the suffix -hyus, which is often applied to bunodont artiodactyls. The species name, primitivus, refers to it bearing relatively primitive features.[1] Erlianhyus was originally regarded as the sister taxon of a clade containing dichobunids, anthracotheriids and suoids.[1] In 2023, Yu and colleagues performed a phylogenetic analysis that recovered it in a polytomy with Andrewsarchus and Achaenodon.[2]
Description
[edit]Erlianhyus is known from a partial maxilla that preserves teeth P3–M3. The molars are bunodont and bear weak cristae, similar to entelodontids.[1] Similarly M1 in both Erlianhyus and entelodonts lacks lingual cingulum. However, the molars have a large and lingually-positioned metaconule and the postmetaconule crista on M1 and M2 are distinct, suggesting that it does not belong to that clade.[2]
References
[edit]- ^ a b c d Li, Qian; Li, Qi (2022-10-03). "A new middle Eocene bunodont artiodactyl from the Erlian Basin (Nei Mongol, China)". Historical Biology. 34 (10): 1941–1949. doi:10.1080/08912963.2021.1989679. ISSN 0891-2963.
- ^ a b Yu, Yang; Gao, Hongyan; Li, Qiang; Ni, Xijun (2023). "A new entelodont (Artiodactyla, Mammalia) from the late Eocene of China and its phylogenetic implications". Journal of Systematic Palaeontology. 21 (1). doi:10.1080/14772019.2023.2189436. ISSN 1477-2019.