A Pliocene–Pleistocene continental biota from Venezuela

Autor: Carrillo-Briceño, Jorge D, Sánchez, Rodolfo, Scheyer, Torsten M, Carrillo, Juan D, Delfino, Massimo, Georgalis, Georgios L, Kerber, Leonardo, Ruiz‑Ramoni, Damián, O Birindelli, José L, Cadena, Edwin Alberto, Rincón, Aldo F, Chavez‑Hoffmeister, Martin, Carlini, Alfredo A, Carvalho, Mónica R, Trejos‑Tamayo, Raúl, Vallejo, Felipe, Jaramillo, Carlos, Jones, Douglas S, Sánchez-Villagra, Marcelo R
Přispěvatelé: Universität Zürich [Zürich] = University of Zurich (UZH), Centre de Recherche en Paléontologie - Paris (CR2P), Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Gothenburg Global Biodiversity Centre, Università degli studi di Torino (UNITO), Universitat Autònoma de Barcelona (UAB), Museu Paraense Emílio Goeldi [Belém, Brésil] (MPEG), Centro de Estudios Parasitológicos y de Vectores and Centro Regional de Investigaciones Científicas y Transferencia Tecnológicas La Rioja, Centro de Estudios Parasitologicos y de Vectores [La Plata] (CEPAVE), Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires] (CONICET)-Universidad Nacional de la Plata [Argentine] (UNLP)-Comisión de Investigaciones Científicas [Buenos Aires] (CIC)-Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires] (CONICET)-Universidad Nacional de la Plata [Argentine] (UNLP)-Comisión de Investigaciones Científicas [Buenos Aires] (CIC), State University of Londrina = Universidade Estadual de Londrina, Universidad del Rosario [Bogota], Smithsonian Tropical Research Institute, Universidad del Norte, Barranquilla, Universidad Austral de Chile, Universidad Nacional de la Plata [Argentine] (UNLP), Universidad de Caldas [Manizales, Colombia], Universidad de Salamanca, Institut des Sciences de l'Evolution de Montpellier (UMR ISEM), École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre National de la Recherche Scientifique (CNRS)-Institut de recherche pour le développement [IRD] : UR226, University of Florida [Gainesville] (UF), University of Zurich, Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Institut de recherche pour le développement [IRD] : UR226-Centre National de la Recherche Scientifique (CNRS), Università degli studi di Torino = University of Turin (UNITO), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE)
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Swiss Journal of Palaeontology, Vol 140, Iss 1, Pp 1-76 (2021)
Swiss Journal of Palaeontology
Swiss Journal of Palaeontology, Springer, 2021, 140 (1), ⟨10.1186/s13358-020-00216-6⟩
SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
Swiss Journal of Palaeontology, 2021, 140 (1), ⟨10.1186/s13358-020-00216-6⟩
ISSN: 1664-2384
1664-2376
DOI: 10.1186/s13358-020-00216-6⟩
Popis: The Pliocene–Pleistocene transition in the Neotropics is poorly understood despite the major climatic changes that occurred at the onset of the Quaternary. The San Gregorio Formation, the younger unit of the Urumaco Sequence, preserves a fauna that documents this critical transition. We report stingrays, freshwater bony fishes, amphibians, crocodiles, lizards, snakes, aquatic and terrestrial turtles, and mammals. A total of 49 taxa are reported from the Vergel Member (late Pliocene) and nine taxa from the Cocuiza Member (Early Pleistocene), with 28 and 18 taxa reported for the first time in the Urumaco sequence and Venezuela, respectively. Our findings include the first fossil record of the freshwater fishes Megaleporinus, Schizodon, Amblydoras, Scorpiodoras, and the pipesnake Anilius scytale, all from Pliocene strata. The late Pliocene and Early Pleistocene ages proposed here for the Vergel and Cocuiza members, respectively, are supported by their stratigraphic position, palynology, nannoplankton, and 86Sr/88Sr dating. Mammals from the Vergel Member are associated with the first major pulse of the Great American Biotic Interchange. In contrast to the dry conditions prevailing today, the San Gregorio Formation documents mixed open grassland/forest areas surrounding permanent freshwater systems, following the isolation of the northern South American basin from western Amazonia. These findings support the hypothesis that range contraction of many taxa to their current distribution in northern South America occurred rapidly during at least the last 1.5 million years.
Facultad de Ciencias Naturales y Museo
Databáze: OpenAIRE
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