A Pliocene–Pleistocene continental biota from Venezuela

Jorge Carrillo-Briceño; Rodolfo Sánchez; Torsten Scheyer; Juan Carrillo; Massimo Delfino; Georgios Georgalis; Leonardo Kerber; Damián Ruiz-Ramoni; José Birindelli; Edwin Alberto Cadena; Aldo Rincon; Martin Chavez-Hoffmeister; Alfredo Carlini; Mónica Carvalho; Raúl Trejos-Tamayo; Felipe Vallejo; Carlos Jaramillo; Douglas Jones; Marcelo Sánchez-Villagra

doi:https://doi.org/10.1186/s13358-020-00216-6

A Pliocene–Pleistocene continental biota from Venezuela

Título traducido de la contribución: Una biota Pliocena-Pleistocénica continental de Venezuela

Jorge Carrillo-Briceño, Rodolfo Sánchez, Torsten Scheyer, Juan Carrillo, Massimo Delfino, Georgios Georgalis, Leonardo Kerber, Damián Ruiz-Ramoni, José Birindelli, Edwin Alberto Cadena, Aldo Rincon, Martin Chavez-Hoffmeister, Alfredo Carlini, Mónica Carvalho, Raúl Trejos-Tamayo, Felipe Vallejo, Carlos Jaramillo, Douglas Jones, Marcelo Sánchez-Villagra

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

14 Citas (Scopus)

Resumen

La transición Plioceno-Pleistoceno en el Neotrópico es poco conocida a pesar de los grandes cambios climáticos que ocurrieron al inicio del Cuaternario. La Formación San Gregorio, la unidad más joven de la Secuencia Urumaco, conserva una fauna que documenta esta transición crítica. Reportamos mantarrayas, peces óseos de agua dulce, anfibios, cocodrilos, lagartos, serpientes, tortugas acuáticas y terrestres y mamíferos. Se reportan un total de 49 taxones del Miembro Vergel (Plioceno tardío) y nueve taxones del Miembro Cocuiza (Pleistoceno temprano), con 28 y 18 taxones reportados.
por primera vez en la secuencia Urumaco y Venezuela, respectivamente. Nuestros hallazgos incluyen el primer registro fósil de los peces de agua dulce Megaleporinus, Schizodon, Amblydoras, Scorpiodoras y la serpiente pipa Anilius scytale, todos de los estratos del Plioceno. Las edades del Plioceno tardío y del Pleistoceno temprano propuestas aquí para los miembros de Vergel y Cocuiza, respectivamente, están respaldadas por su posición estratigráfica, palinología, nannoplancton y datación 86Sr / 88Sr. Los mamíferos del Miembro Vergel están asociados con el primer pulso importante del Gran Intercambio Biótico Americano. En contraste con las condiciones secas que prevalecen hoy, la Formación San Gregorio documenta áreas mixtas de pastizales / bosques abiertos que rodean sistemas de agua dulce permanentes, luego del aislamiento de la cuenca norte de América del Sur de la Amazonia occidental. Estos hallazgos apoyan la hipótesis de que la contracción del rango de muchos taxones a su distribución actual en el norte de América del Sur ocurrió rápidamente durante al menos los últimos 1,5 millones de años.

Título traducido de la contribución	Una biota Pliocena-Pleistocénica continental de Venezuela
Idioma original	Inglés estadounidense
Páginas (desde-hasta)	1-76
Número de páginas	76
Publicación	Swiss Journal of Palaeontology
Volumen	140
N.º	9
DOI	https://doi.org/10.1186/s13358-020-00216-6
Estado	Publicada - abr. 23 2021

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Carrillo-Briceño, J., Sánchez, R., Scheyer, T., Carrillo, J., Delfino, M., Georgalis, G., Kerber, L., Ruiz-Ramoni, D., Birindelli, J., Cadena, E. A., Rincon, A., Chavez-Hoffmeister, M., Carlini, A., Carvalho, M., Trejos-Tamayo, R., Vallejo, F., Jaramillo, C., Jones, D., & Sánchez-Villagra, M. (2021). A Pliocene–Pleistocene continental biota from Venezuela. Swiss Journal of Palaeontology, 140(9), 1-76. https://doi.org/10.1186/s13358-020-00216-6

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title = "A Pliocene–Pleistocene continental biota from Venezuela",

abstract = "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 reportedfor 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 sur‐ rounding 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.",

author = "Jorge Carrillo-Brice{\~n}o and Rodolfo S{\'a}nchez and Torsten Scheyer and Juan Carrillo and Massimo Delfino and Georgios Georgalis and Leonardo Kerber and Dami{\'a}n Ruiz-Ramoni and Jos{\'e} Birindelli and Cadena, {Edwin Alberto} and Aldo Rincon and Martin Chavez-Hoffmeister and Alfredo Carlini and M{\'o}nica Carvalho and Ra{\'u}l Trejos-Tamayo and Felipe Vallejo and Carlos Jaramillo and Douglas Jones and Marcelo S{\'a}nchez-Villagra",

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Carrillo-Briceño, J, Sánchez, R, Scheyer, T, Carrillo, J, Delfino, M, Georgalis, G, Kerber, L, Ruiz-Ramoni, D, Birindelli, J, Cadena, EA, Rincon, A, Chavez-Hoffmeister, M, Carlini, A, Carvalho, M, Trejos-Tamayo, R, Vallejo, F, Jaramillo, C, Jones, D & Sánchez-Villagra, M 2021, 'A Pliocene–Pleistocene continental biota from Venezuela', Swiss Journal of Palaeontology, vol. 140, n.º 9, pp. 1-76. https://doi.org/10.1186/s13358-020-00216-6

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T1 - A Pliocene–Pleistocene continental biota from Venezuela

AU - Carrillo-Briceño, Jorge

AU - Sánchez, Rodolfo

AU - Scheyer, Torsten

AU - Carrillo, Juan

AU - Delfino, Massimo

AU - Georgalis, Georgios

AU - Kerber, Leonardo

AU - Ruiz-Ramoni, Damián

AU - Birindelli, José

AU - Cadena, Edwin Alberto

AU - Rincon, Aldo

AU - Chavez-Hoffmeister, Martin

AU - Carlini, Alfredo

AU - Carvalho, Mónica

AU - Trejos-Tamayo, Raúl

AU - Vallejo, Felipe

AU - Jaramillo, Carlos

AU - Jones, Douglas

AU - Sánchez-Villagra, Marcelo

PY - 2021/4/23

Y1 - 2021/4/23

N2 - 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 reportedfor 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 sur‐ rounding 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.

AB - 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 reportedfor 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 sur‐ rounding 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.

U2 - https://doi.org/10.1186/s13358-020-00216-6

DO - https://doi.org/10.1186/s13358-020-00216-6

M3 - Article

SN - 1664-2376

VL - 140

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JO - Swiss Journal of Palaeontology

JF - Swiss Journal of Palaeontology

IS - 9

ER -

A Pliocene–Pleistocene continental biota from Venezuela

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