Sinemys

Sinemys; Temporal range: Late Jurassic to Early Cretaceous
	Holotype carapace and plastron (IVPP V9538) of S. brevispinus, Paleozoological Museum of China
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Pantestudines
Clade:	Testudinata
Family:	†Sinemydidae
Genus:	†Sinemys; Wiman, 1930
Species
	S. lens Wiman, 1930 (type); S. brevispinus Tong and Brinkman, 2013; S. chabuensis Ji and Chen, 2018; S. gamera Brinkman and Peng, 1993;

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Sinemys is an extinct genus of turtle from the Late Jurassic to Early Cretaceous of China. Three species have been named: S. lens, the type species, from the Kimmeridgian-Tithonian of Shandong; S. gamera (Japanese: シネミス・ガメラ) (named after the movie monster of the same name), from the Valanginian-Albian of Nei Mongol, and S. brevispinus from Early Cretaceous of Nei Mongol.^[1] S. wuerhoensis, from the Aptian-Albian of Xinjiang, is not referrable to this genus.^[2] Specimen that may be belong to this genus were also known from Japan,^[3] although later abstract considered it as indeterminate sinemydid.^[4] The species S. gamera is noted for the presence of a pair of elongate spines projecting outwards and backwards from seventh costal of the carapace. These may have served a hydrodynamic function.^[5]

References

^ Tong, Haiyan; Brinkman, Donald (2013-09-01). "A new species of Sinemys (Testudines: Cryptodira: Sinemydidae) from the Early Cretaceous of Inner Mongolia, China". Palaeobiodiversity and Palaeoenvironments. 93 (3): 355–366. doi:10.1007/s12549-012-0110-8. ISSN 1867-1608.
^ Rabi, Márton; Joyce, Walter G.; Wings, Oliver (2010). "A review of the Mesozoic turtles of the Junggar Basin (Xinjiang, Northwest China) and the paleobiogeography of Jurassic to Early Cretaceous Asian testudinates". Palaeobiodiversity and Palaeoenvironments. 90 (3): 259–273. doi:10.1007/s12549-010-0031-3. ISSN 1867-1594.
^ Lucas, Spencer G.; Kirkland, James I.; Estep, John W. (1998). Lower and Middle Cretaceous Terrestrial Ecosystems: Bulletin 14. New Mexico Museum of Natural History and Science.
^ Hirayama, Ren; Teppei, Sonoda (2015). "Review of the Cretaceous Non-marine Turtles of Japan" (PDF). ASIAN DINOSAURS in Thailand 2015.
^ Tong, Haiyan; Brinkman, Donald (September 2013). "A new species of Sinemys (Testudines: Cryptodira: Sinemydidae) from the Early Cretaceous of Inner Mongolia, China". Palaeobiodiversity and Palaeoenvironments. 93 (3): 355–366. doi:10.1007/s12549-012-0110-8. ISSN 1867-1594.

References

Further reading