Reptiles from lithographic limestones of the Los Catutos Member (Middle-Upper Tithonian), Neuquén Province, Argentina: An essay on its taxonomic composition and preservation in an...

Authors
Brandoni, Zulma Nelida; Fernandez, Marta Susana; de la Fuente, Marcelo Saul; Herrera, Laura Yanina; Codorniú Dominguez, Laura Susana; Garrido, Alberto Carlos
Publication Year
2015
Language
English
Format
article
Status
Published version
Description
The lithographic limestones of Los Catutos Member (Vaca Muerta Formation, Neuquén province, Argentina) (late middle-early upper Tithonian) bear a great diversity of marine reptiles. These lithographic limestones are significant because they are the unique in the Southern Hemisphere since the record of lithographic limestones from Upper Jurassic is restricted to the Northern Hemisphere, particularly Western Europe. Some European basins are the most closely in age (upper Kimmeridgian-lower Tithonian) but they do not reach the upper?middle Tithonian. Also, in the European basins the marine reptiles are mixed with continental biota whereas in Los Catutos Member the biota is exclusively marine, being the only exception the pterosaurs. The strictly marine biota is composed by ichthyosaurus, two different clades of turtles, one crocodyliform and one plesiosaur. This taxonomic composition presents closest taxonomic affinities with that found in Cerro Lotena (middle Tithonian) of the same formation. These localities share the same turtle species and one metriorhynchid genus; ichthyosaurs only coincide in the family Ophthalmosauridae. The knowledge resulting from the studies of marine reptiles of the Los Catutos Member, as well as those found in other localities of the Neuquén Basin, contributed to reduce the gap of information on the evolution of the clades. On this regard, they are the only ones known from Gondwana and are particularly significant because they are completing the Jurassic/Cretaceous transition, scarcely represented in the world record.
Fil: Brandoni, Zulma Nelida. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Fernandez, Marta Susana. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: de la Fuente, Marcelo Saul. Museo Municipal de Historia Natural San Rafael - Unidad Asociada Al Cct Mendoza; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Herrera, Laura Yanina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Codorniú Dominguez, Laura Susana. Universidad Nacional de San Luis. Facultad de Ciencias Fã­sico Matemã¡ticas y Naturales. Departamento de Geologia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Garrido, Alberto Carlos. Provincia del Neuquen. Ministerio de Energia, Ambiente y Servicios Publicos. Direccion Provincial de Mineria. Museo Provincial de Ciencias Naturales Prof. ; Argentina
Subject
MARINE REPTILES
NEUQUÉN BASIN
VACA MUERTA FORMATION
SOUTH AMERICA
GONDWANA
Paleontología
Ciencias de la Tierra y relacionadas con el Medio Ambiente
CIENCIAS NATURALES Y EXACTAS
Access level
Restricted access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/6980