Testudines Batsch, 1788

Danilov, Igor G. & Sukhanov, Vladimir B., 2006, A basal eucryptodiran turtle “ Sinemys ” efremovi (= Wuguia efremovi) from the Early Cretaceous of China, Acta Palaeontologica Polonica 51 (1), pp. 105-110 : 109-110

Testudines Batsch, 1788

Pancryptodira Joyce, Parham, and Gauthier, 2004 Eucryptodira Gaffney, 1975 sensu Gaffney (1984) grade “ Macrobaenidae ” Sukhanov, 1964 sensu Parham and Hutchison (2003)

Wuguia Matzke, Maisch, Pfretzschner, Sun, and Stöhr, 2004

2004 Wuguia : Matzke et al. 2004: 153; Matzke and Maisch 2004: 474. Type species: Wuguia hutubeiensis Matzke, Maisch, Pfretzschner, Sun, and Stöhr, 2004 .

Included species: Type species and Wuguia efremovi ( Khosatzky, 1996) .

Diagnosis (emended after Matzke et al. 2004).—Small eucryptodiran turtle (up to 150 mm in shell length) with no or very small nuchal emargination. Nuchal probably wider than vertebral first scale. Preneural absent. Eight neurals present. Additional ossifications may be present in the nuchal and suprapygal regions of the carapace. Peripherals gutter present. Plastral bridges relatively long (35–45% of the plastron width). Anterior and posterior lobes very narrow and elongated. Cervical scale wide.

Comparison.—For comparison with other “macrobaenid/ sinemydid” turtles see Table 1.

Distribution.—Tugulu Group, Lower Cretaceous of China.