The Lotena Formation is a geologic formation dated from the Late Callovian to Early Oxfordian in the Neuquén Basin in Mendoza Province, Argentina.Lotena Formation at Fossilworks.org The formation, first defined by Weaver in 1931 and named after Cerro Lotena,Zanettini et al., 2010, p.25 consists of fluvial conglomerates, calcareous sandstones and marine limestones and shales.Veiga et al., 2011, p.174 The Lotena Formation is overlain by the La Manga Formation and overlies the Lajas Formation of the Cuyo Group.Veiga et al., 2011, p.178 Initially, the fossil find of the pterosaur Herbstosaurus pigmaeus was reported from the formation,Wellnhofer, 1991, p.81 but this fossil was found in the younger Vaca Muerta.Herbstosaurus at Fossilworks.org The formation is a reservoir rock in the Neuquén Basin.
See also Los Molles Formation, contemporaneous formation of the Neuquén Basin Cañadón Calcáreo Formation, contemporaneous formation of the Cañadón Asfalto Basin
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