Sinokannemeyeria

Sinokannemeyeria is a genus of kannemeyeriid dicynodont that lived during the Anisian age of Middle Triassic period in what is now Shanxi, China.[1][2]

Sinokannemeyeria Temporal range: Middle Triassic, 247.2–242 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Mounted skeleton, Paleozoological Museum of China
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Therapsida
Clade:	†Dicynodontia
Family:	†Kannemeyeriidae
Genus:	†Sinokannemeyeria Young, 1937
Type species
†Sinokannemeyeria pearsoni Young, 1937
Species
†S. baidaoyuensis Liu, 2015 †S. pearsoni Young, 1937 †S. sanchuanheensis Cheng, 1980 †S. yingchiaoensis Sun, 1963

Description

Restoration of Sinokannemeyeria

Sinokannemeyeria was about 1.8 metres (5.9 ft) in length and 100 kilograms (220 lb) in weight. It had relatively short, stumpy legs which were held slightly sprawling gait to the sides of its body. The limb girdles were formed into large, heavy plates of bone to support the weight of the wide, heavily built body. Sinokannemeyeria was probably not a fast or agile animal.[3]

The front of the jaw had a small horn-covered beak, and there were two small tusks growing from bulbous projections on the upper jaw. These tusks could have been used to dig up roots.[3] Compared to Kannemeyeria, it had broader snout, smaller temporal fenestrae and lower temporal crests. Sinokannemeyeria may had rather indiscriminately seized and torn vegetation in contrast to the more selective cropping of Kannemeyeria.[4]

Classification

Skeletal mount with a juvenile in the bottom left

Below is a cladogram from Kammerer et al. (2013):[5]

Kannemeyeriiformes

Angonisaurus     Shansiodontidae     Tetragonias     Vinceria         Shansiodon     Rhinodicynodon           Dinodontosaurus         Shaanbeikannemeyeria       Kannemeyeria simocephalus     Kannemeyeria lophorhinus             Parakannemeyeria     Xiyukannemeyeria           Dolichuranus       Rechnisaurus     Uralokannemeyeria           Rhadiodromus       Sinokannemeyeria         Rabidosaurus     Wadiasaurus     Stahleckeriidae Placeriinae   Zambiasaurus       Placerias     Moghreberia       Stahleckeriinae   Stahleckeria         Eubrachiosaurus     Sangusaurus         Jachaleria     Ischigualastia

References

1. "Sinokannemeyeria". Fossilworks. Retrieved 14 March 2020.
2. J. Liu. 2015. New discoveries from the Sinokannemeyeria-Shansisuchus Assemblage Zone: 1. Kannemeyeriiformes from Shanxi, China. Vertebrata PalAsiatica 53(1):16-28
3. Richardson, Hazel (2003). Dinosaurs and Prehistoric Life. London: Dorling Kindersley Limited. p. 48. ISBN 0-7513-3734-X.
4. Lucas, Spencer G. (2001). Chinese Fossil Vertebrates (First ed.). New York: Columbia University Press. p. 110. ISBN 9780231084833. Retrieved 14 March 2020.
5. Kammerer, C. F.; Fröbisch, J. R.; Angielczyk, K. D. (2013). Farke, Andrew A (ed.). "On the Validity and Phylogenetic Position of Eubrachiosaurus browni, a Kannemeyeriiform Dicynodont (Anomodontia) from Triassic North America". PLoS ONE. 8 (5): e64203. doi:10.1371/journal.pone.0064203. PMC 3669350. PMID 23741307.

See also

• List of therapsids