Sinaspideretes

Sinaspideretes is an extinct genus of turtle from the Late Jurassic of China, probably from the Shaximiao Formation. It is considered the earliest and most basal representative of the Trionychia, and is possibly the oldest known member of Cryptodira. In 2013, it was proposed that this animal and the genus Yehguia are in fact one and the same.

References

• Ouyang, Hui, Li, Lu, Tong, Haiyan, July 2014, A revision of Sinaspideretes wimani Young & Chow, 1953 (Testudines: Cryptodira: Trionychoidae) from the Jurassic of the Sichuan Basin, China, Geological Magazine, 151, 4, 600–610, 10.1017/S0016756813000575, 2014GeoM..151..600T, 128423062, 0016-7568
• Fossilworks: Sinaspideretes wimani, fossilworks.org, 17 December 2021
• Evers, Serjoscha W., Benson, Roger B. J., January 2019, Smith, Andrew, A new phylogenetic hypothesis of turtles with implications for the timing and number of evolutionary transitions to marine lifestyles in the group, Palaeontology, en, 62, 1, 93–134, 10.1111/pala.12384, 2019Palgy..62...93E, 134736808, subscription
• Tong, Haiyan, Li, Lu, Ouyang, Hui, 2014, A revision of Sinaspideretes wimani Young & Chow, 1953 (Testudines: Cryptodira: Trionychoidae) from the Jurassic of the Sichuan Basin, China, Geological Magazine, en, 151, 4, 600–610, 10.1017/S0016756813000575, 2014GeoM..151..600T, 128423062, 0016-7568, subscription

Sources

• The Age of Dinosaurs in Russia and Mongolia by Michael J. Benton, Mikhail A. Shishkin, David M. Unwin, and Evgenii N. Kurochkin
• Chinese Fossil Vertebrates by Spencer G. Lucas