Anhuilong
Named after Anhui province in China combined with Chinese 'long' meaning 'dragon'; meaning 'Anhui dragon'
Anhuilong is a genus of mamenchisaurid dinosaur known from the Hongqin Formation of Anhui province, China. The genus contains a single species, Anhuilong diboensis.
Diagnosis
- Lateral edge of deltopectoral crest turns caudolaterally (differs from other mamenchisaurids).
- Lateral accessory process of humerus more robust than medial one (reversed from other Mamenchisauridae).
- Ratio of total length of radius to humerus is 0.50, the lowest value among mamenchisaurids.
- Ratio of total length of ulna to humerus is 0.56, the lowest value among mamenchisaurids.
- Elliptical cross-sectional shape of ulna at mid-shaft with highest transverse-to-craniocaudal diameter ratio among mamenchisaurids.
- Nearly perpendicular orientation of proximal end of ulna relative to long axis of ulnar shaft.
Species
Anhuilong diboensis Ren et al., 2020
Type species
Named for the locality where the holotype is reposited.
- Holotype
- AGB 5822 , Geological and Paleontological Museum of Anhui
- Material
- Associated and complete left humerus, ulna and radius of an individual.
- Horizon
- lower Hongqin Formation, Middle Jurassic
- Locality
- Jimushan, Anhui, China
References
- Ren, X. X.; Huang, J. D.; You, H. L. (2020). The second mamenchisaurid dinosaur from the Middle Jurassic of Eastern China. Historical Biology 32(5): 602-610. Informa UK Limited. doi:10.1080/08912963.2018.1515935 ren2020b