Lourdes Susana Morton

Gastrópodos de la Formación El Morterito (Mioceno Superior), valle del Cajón, provincia de Catamarca, Argentina

Gastropods from the Morterito Formation (Upper Miocene) in the Cajon Valley, Catamarca province, Argentina. A gastropod fauna from several localities in the Cajon valley, Catamarca province, from the Upper Miocene El Morterito Formation is described. It includes two new species of Epiphragmophora (Xanthonychidae), two new species of Biomphalaria (Planorbidae), and one previously known species of Cyclodontina (Odontostomidae). This association suggests shallow freshwater bodies, with vegetated margins.