PaleoDB taxon number: 67590
Synonyms: Baena clara Hay 1908 (no. 238230), Baena emiliae Hay 1908 (no. 105258), Baena sima Hay 1908 (no. 238228), Stylemys emiliae Hay 1908 (no. 105259)
Full reference: J. Leidy. 1870. [Descriptions of Emys jaenesi, E. haydeni, Baena arenosa, and Saniwa ensidens]. Proceedings of the American Philosophical Society 1870:123-124
- Baena arenosa: USNM 103, a partial shell. Its type locality is junction of the Big Sandy and Green river, which is in a Ypresian/Lutetian terrestrial horizon in the Bridger Formation of Wyoming.
- Baena clara: AMNH 1675, a shell.
- Baena emiliae: AMNH 1925, a shell. Its type locality is White River near Ouray, which is in an Uintan terrestrial horizon in the Uinta Formation of Utah.
- Baena sima: AMNH 5971, a skeleton (skull, shell and postcranium). Its type locality is Little Dry Creek, which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming.
Ecology: aquatic carnivore