FORASIEPI Analia Marta
Notes on fossil remains from the Early Cretaceous Lohan Cura Formation, Neuquén Province, Argentina
AGUSTÍN G. MARTINELLI; ALBERTO C. GARRIDO; ANALÍA M. FORASIEPI; ERNESTO R. PAZ; YAMILA GUROVICH
International Association for Gondwana Research
Lugar: Japan; Año: 2007 vol. 11 p. 537 - 552
In this contribution we describe an association of fossil remains collected in the locality of Cerro de Los Leones, approximately eight kilometers southwest of the town of Picún Leufú, Neuquén Province, Argentina, from different levels of the Albian Cullín Grande Member, Lohan Cura Formation. The fossils include: pelecypodan (Neocorbicula dinosauriorum, N. pehuenchensis, and genus indet.) and gastropodan (Physa wichmanni) molluscs, a mesoeucrocodylian, possible pterosaurs, theropods, and sauropods. The sedimentary environment at Cerro de los Leones is characterized by fluvial deposits corresponding to a sandy meandering fluvial system. The most fossiliferous levels (located in the lower part of the exposed sequence) were developed in a distal flood plain and flood basin areas. Sedimentological and paleopedological features suggest semi-arid conditions during the deposition of the Cullín Grande Member. Despite the fragmentary nature of the specimens described here, the new information provided from the Albian assemblages of the Lohan Cura Formation at the Cerro de Los Leones locality provides a broader panorama of the composition of terrestrial faunas during the Early Cretaceous in Patagonia.