The late Miocene elasmobranch assemblage from Cerro Colorado (Pisco Formation, Peru)

Walter Landini, Alì Altamirano-Sierra, Alberto Collareta, Claudio Di Celma, Mario Urbina, Giovanni Bianucci

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27 Scopus citations

Abstract

The new late Miocene elasmobranch assemblage from Cerro Colorado (Pisco Formation) described herein provides a first comprehensive view on the composition and structure of this community in the Pisco Basin (Peru), one of the most important Neogene Konservat-Lagerstätten of the world. The studied assemblage includes at least 21 species attributed to 10 families and 5 orders: 7 taxa are recorded for the first time in the Pisco Formation and 3 for the first time in the fossil record of Peru. Three shark-tooth bearing intervals have been recognized at Cerro Colorado. Changes in the taxonomic composition of these three fossiliferous deposits allowed us to reconstruct ecological, trophic and environmental dynamics over the stratigraphic succession of Cerro Colorado. In particular, the environmental scenario of the most diversified shark tooth-bearing interval (ST-low1) is consistent with a shallow marine coastal area, influenced by both brackish and open sea waters, dominated by a community of small mesopredator sharks that used this ecospace as reproductive ground (nursery) and recruitment area.
Original languageAmerican English
Pages (from-to)168-190
Number of pages23
JournalJournal of South American Earth Sciences
Volume73
DOIs
StatePublished - 1 Jan 2017

Keywords

  • Miocene
  • Paleoecology
  • Paleoenvironments
  • Peru
  • Rays
  • Sharks

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    Landini, W., Altamirano-Sierra, A., Collareta, A., Di Celma, C., Urbina, M., & Bianucci, G. (2017). The late Miocene elasmobranch assemblage from Cerro Colorado (Pisco Formation, Peru). Journal of South American Earth Sciences, 73, 168-190. https://doi.org/10.1016/j.jsames.2016.12.010