Gaffney, Eugene S.; Campbell, Kenneth E., 1943-; Wood, Roger Conant.
(New York, NY : American Museum of Natural History, 1998)
"Fossil turtles have been recovered from outcrops on the Río Purus, Río Acre, and Río Madre de Dios in the southwestern Amazon basin where the borders of Brazil, Peru, and Bolivia converge. The fossils are from two discernible ...