Article: Plio-Pleistocene ostracods from the upper Amazon of Colombia and Peru

An unnamed formation from near La Tagua, Colombia, and the Pebas Beds of Peru contains ostracod faunas that provide new information on the environment of deposition and the probable age o sediments. The ostracods are a mixture of freshwater, brackish, and marine species, from what was essenl a brackish-water environment. Fifteen species, of which nine are new, are described, together with two subspecies. Three genera—Botulocyprideis, Otarocyprideis, and Rhadinocytherura—are new.