Amphimachairodus hezhengensis Jiangzuo, Werdelin, Sanisidro, Yang, Fu, Li, Wang & Deng, 2023
- Dataset
- GBIF Backbone Taxonomy
- Rank
- SPECIES
- Published in
- Jiangzuo, Qigao, Werdelin, Lars, Sanisidro, Oscar, Yang, Rong, Fu, Jiao, Li, Shijie, Wang, Shiqi, Deng, Tao (2023): Origin of adaptations to open environments and social behaviour in sabretoothed cats from the northeastern border of the Tibetan Plateau. Proceedings of the Royal Society B: Biological Sciences (20230019) 290 (1997): 1-11, DOI: 10.1098/rspb.2023.0019, URL: http://dx.doi.org/10.1098/rspb.2023.0019
Classification
- kingdom
- Animalia
- phylum
- Chordata
- class
- Mammalia
- order
- Carnivora
- family
- Felidae
- genus
- Amphimachairodus
- species
- Amphimachairodus hezhengensis
diagnosis
Diagnosis: medium-sized Amphimachairodus with small incisors and I 1 with lingually posited accessory cusps; long C-P 3 diastema; presence of P 2; relatively small cheek teeth; small P 4 preparastyle and moderate protocone. Differential diagnosis: differs from Machairodus and Nimraoides in having different cranial morphology, e. g. lower angle between facial and neurocranial part, wide forehead, retracted orbit and long rostrum, shorter and dorsally arched zygomatic arch, slightly overhanging glenoid fossa, more arched incisor row and more separated lingual accessory cusps in I 2, presence of P 2, more distinct P 4 preparastyle and smaller protocone; differs from Lokotunjailurus in having larger size, longer C-P 3 diastema, stronger P 3 anterior accessory cusp and more robust P 4; differs from other species of Amphimachairodus in having smaller incisors, I 1 with two closely located lingual accessory cusps, longer C-P 3 diastema, smaller cheek teeth, smaller P 4 preparastyle and slightly larger protocone.
distribution
Type locality: Houshan, Linxia Basin, Gansu province of northern China. Chronology and distribution: Thus far only known from the early Late Miocene of northern China.
etymology
Etymology: After the place (Hezheng Paleozoological Museum, Hezheng, China) where the specimen was found and is currently stored.
materials_examined
Holotype: HMV 2041, a nearly complete cranium (figure 1; electronic supplemenatry material, figures S 1 and S 2).