The first fossil record of the sawshark <i>Pliotrema</i> (Pristiophoridae) from the Neogene of south-eastern Pacific (Chile)
- Autor(en)
- Maurice Guicharrousse-Vargas, Jaime A. Villafana, Pablo Oyanadel-Urbina, Jorge D. Carrillo-Briceño, Romina Figueroa, José R. Pérez-Marín, Marcelo Rivadeneira, Jürgen Kriwet
- Abstrakt
We present the first fossil record of the sawshark genus Pliotrema from the south-eastern Pacific Ocean. The examined material was obtained from a little-known fossil locality named “Arenas de Caldera” in the Atacama Region of Chile. The fossiliferous deposits belong to the Bahía Inglesa Formation, which is most likely middle Miocene–early Pliocene in age. There are no extant species of this sawfish in the eastern Pacific, probably due to the onset of cooling conditions during the Neogene. The type of environment for the elasmobranchs reported in this study is interpreted as demersal, based on the bathymetric affinities of extant species. Our results show that future studies are needed to better understand the evolutionary history and past distributions of this sawshark genus and their implications on current biogeographic patterns.
- Organisation(en)
- Institut für Paläontologie
- Externe Organisation(en)
- Museo Paleontológico de Caldera, Consejo de Momunentos Nacionales de Chile, Universität Wien, Laboratorio de Paleobiologfa, Centrode Estudios Avanzados en Zonas Aridas (CEAZA), Universität Zürich (UZH), Universidad Católica del Norte, Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Universidad de La Serena
- Journal
- Ameghiniana
- Band
- 58
- Seiten
- 122-131
- Anzahl der Seiten
- 10
- ISSN
- 0002-7014
- DOI
- https://doi.org/10.5710/AMGH.01.03.2021.3389
- Publikationsdatum
- 04-2021
- Peer-reviewed
- Ja
- ÖFOS 2012
- 105118 Paläontologie
- Schlagwörter
- ASJC Scopus Sachgebiete
- Ecology, Evolution, Behavior and Systematics, Palaeontology
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/d9f41e82-5ab3-452c-9130-76a273944d81