TABLE XII. 



REMAINS OF A SPECIES OF LAN» TURTLE, FROM THE EOCENE TERTIARY OF NEBRASKA. 

 Engraved from DaguerreolJ pes of lliu Original f^pecimeii. 



Tab. XII., Tcstudo Culbctisonii^ two-liftlis the diameter of nature. 

 '• Fig. 1. Ventral view. Sternum. 

 " Fig. 2. Dorsal view. Carapace. 



Tile anterior part of botli figures is directed to tlie left of the engraving. 



Thougli tlie fossil turtles of the Mauvaises Terres of Nebraska, have most analogy, in the details of 

 the anatomy of the carapace, to the land tortoises, still their general form and appearance closely 

 approximate to the aquatic turtles, and for this reason it is not improbable that they were partly 

 aquatic in their habits. . , . - 



