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Título: Marine reptiles from the Jur the Jurassic/Cretaceous transition at the High Andes, Mendoza, Argentina
Autor(es): Fernández, Marta S.
Herrera, Yanina
Vennari, Verónica V.
Campos, Lisandro
De La Fuente, Marcelo
Talevi, Marianella
Aguirre Urreta, Beatriz
Fecha de publicación: mar-2019
Editorial: Elsevier
Citación: Fernández, Marta S., Herrera, Yanina., Vennari, Verónica V., Campos, Lisandro., De la Fuente, Marcelo y et al. (2019). Marine reptiles from the Jur the Jurassic/Cretaceous transition at the High Andes, Mendoza, Argentina. Elsevier; Journal of South American Earth Sciences; 92; 658-673
Revista: Journal of South American Earth Sciences
Abstract: Upper Jurassic and Lower Cretaceous deposits of the Vaca Muerta Formation (Neuquén Basin, central-west Argentina) have yielded abundant marine reptile remains. Most of them correspond to faunal assemblages recovered from outcrops in the Neuquén Province (Argentina). Herein we report two new marine reptile-bearing localities documenting the Tithonian–Berriasian transition at the High Andes (Mendoza Province, Argentina). Marine reptiles have been mapped and/or collected in connection with an accurate ammonoid-based biostratigraphic control. All the skeletons have been found preserved in, or associated with, calcareous nodules. At both localities they are frequent in beds assigned to the upper Tithonian ammonite Zone (Microcanthum to “Durangites” Standard Zones), and are rare to common in beds assigned to the upper Tithonian–lower Berriasian Substeueroceras koeneni Zone (“Durangites” to Jacobi Standard Zones). Newly discovered assemblages depict a similar pattern characterized by the lack of plesiosaurs (plesiosauroids and pliosaurids), and by the abundance of mesoconsumers represented by ophthalmosaurids and metriorhynchine metriorhynchids. Macropredator geosaurines, apex metriorhynchids predators, and thalassochelydian turtles are rare components of these assemblages.
Resumen: Upper Jurassic and Lower Cretaceous deposits of the Vaca Muerta Formation (Neuquén Basin, central-west Argentina) have yielded abundant marine reptile remains. Most of them correspond to faunal assemblages recovered from outcrops in the Neuquén Province (Argentina). Herein we report two new marine reptile-bearing localities documenting the Tithonian–Berriasian transition at the High Andes (Mendoza Province, Argentina). Marine reptiles have been mapped and/or collected in connection with an accurate ammonoid-based biostratigraphic control. All the skeletons have been found preserved in, or associated with, calcareous nodules. At both localities they are frequent in beds assigned to the upper Tithonian ammonite Zone (Microcanthum to “Durangites” Standard Zones), and are rare to common in beds assigned to the upper Tithonian–lower Berriasian Substeueroceras koeneni Zone (“Durangites” to Jacobi Standard Zones). Newly discovered assemblages depict a similar pattern characterized by the lack of plesiosaurs (plesiosauroids and pliosaurids), and by the abundance of mesoconsumers represented by ophthalmosaurids and metriorhynchine metriorhynchids. Macropredator geosaurines, apex metriorhynchids predators, and thalassochelydian turtles are rare components of these assemblages.
URI: https://www.sciencedirect.com/science/article/abs/pii/S0895981118303845?via%3Dihub
https://rid.unrn.edu.ar/jspui/handle/20.500.12049/5093
Identificador DOI: https://doi.org/10.1016/j.jsames.2019.03.013
ISSN: 0895-9811
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Este documento es resultado del financiamiento otorgado por el Estado Nacional, por lo tanto queda sujeto al cumplimiento de la Ley N° 26.899