Authors(s)	Zug, G. R.
Year	1966
Title	The penial morphology and the relationships of cryptodiran turtles. Occ. Pap. Mus. Zool. Univ. Michigan (647): 1-24.

• Chrysemys
• Chrysemys picta
• Pseudemys
• Sternotherus
• Sternotherus minor