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Browsing by Autor "Federico J. Degrange"

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    CÓRDOBA Y LA PALEOHERPETOLOGÍA: HISTORIA Y REFLEXIONES
    (Asociación Paleontológica Argentina, 2022) Claudia P. Tambussi; Federico J. Degrange
    En este reporte se repasan algunos hitos que moldearon el desarrollo de la paleontología en general y de la paleoherpetología en particular, en la provincia de Córdoba, Argentina. Se utilizó un orden cronológico para situar los principales eventos que involucran el accionar de los miembros de la Compañía de Jesús desde el siglo XVII (creación del Colegio Mayor, a partir de la cual surge la Universidad Nacional de Córdoba en 1613) hasta los estudios actuales sobre vertebrados fósiles. Sin dudas, la paleontología en Córdoba estuvo caracterizada por los estudios de mamíferos realizados por investigadores no residentes en la provincia. Esta situación fue modificada con la conformación muy reciente de un equipo de paleontólogos de vertebrados no mamíferos que, desde las instituciones asentadas en la provincia, se dedican al estudio de arcosaurios.
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    Direct evidence of trophic interaction between a crocodyliform and a large terror bird in the Middle Miocene of La Venta, Colombia
    (Royal Society, 2025) Andrés Link; Jorge W. Moreno-Bernal; Federico J. Degrange; Siobhán B. Cooke; Luis Gonzalo Ortiz-Pabon; Cesar Augusto Perdomo-Rojas; Rodolfo Salas‐Gismondi
    Direct evidence of predation and other trophic relationships provide valuable information about trophic interactions between species in palaeo-communities. Data on ecological interactions amongst extant apex predators open a unique opportunity to better understand how sympatric apex predators coexisted or interacted with each other in the past. Here, we describe direct evidence of a predation or scavenging event in which we hypothesize that a medium-sized caiman (possibly <i>Purussaurus neivensis</i>) consumed (either through scavenging or through direct predation) a large terror bird. The distal part of a left tibiotarsus from a phorusrhacid had four pits inflicted on the cortical bone, and no signs of healing, suggesting it did not survive this trophic event. This record contributes to our current understanding of prey consumed by <i>P. neivensis</i> in the wetlands of the Pebas System of South America and indicates that large phorusrhacids might have had higher predation risk than previously expected. This study provides evidence of a trophic relation between apex predators and the complexity of trophic interactions in the diverse vertebrate palaeo-community of La Venta in the Middle Miocene of northern South America.

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