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A unique Cretaceous–Paleogene lineage of piranha-jawed pycnodont fishes
The extinct group of the Pycnodontiformes is one of the most characteristic components of the Mesozoic and early Cenozoic fish faunas. These ray-finned fishes, which underwent an explosive morphological diversification during the Late Cretaceous, are generally regarded as typical shell-crushers. Her...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group UK
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5533729/ https://www.ncbi.nlm.nih.gov/pubmed/28754956 http://dx.doi.org/10.1038/s41598-017-06792-x |
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author | Vullo, Romain Cavin, Lionel Khalloufi, Bouziane Amaghzaz, Mbarek Bardet, Nathalie Jalil, Nour-Eddine Jourani, Essaid Khaldoune, Fatima Gheerbrant, Emmanuel |
author_facet | Vullo, Romain Cavin, Lionel Khalloufi, Bouziane Amaghzaz, Mbarek Bardet, Nathalie Jalil, Nour-Eddine Jourani, Essaid Khaldoune, Fatima Gheerbrant, Emmanuel |
author_sort | Vullo, Romain |
collection | PubMed |
description | The extinct group of the Pycnodontiformes is one of the most characteristic components of the Mesozoic and early Cenozoic fish faunas. These ray-finned fishes, which underwent an explosive morphological diversification during the Late Cretaceous, are generally regarded as typical shell-crushers. Here we report unusual cutting-type dentitions from the Paleogene of Morocco which are assigned to a new genus of highly specialized pycnodont fish. This peculiar taxon represents the last member of a new, previously undetected 40-million-year lineage (Serrasalmimidae fam. nov., including two other new genera and Polygyrodus White, 1927) ranging back to the early Late Cretaceous and leading to exclusively carnivorous predatory forms, unique and unexpected among pycnodonts. Our discovery indicates that latest Cretaceous–earliest Paleogene pycnodonts occupied more diverse trophic niches than previously thought, taking advantage of the apparition of new prey types in the changing marine ecosystems of this time interval. The evolutionary sequence of trophic specialization characterizing this new group of pycnodontiforms is strikingly similar to that observed within serrasalmid characiforms, from seed- and fruit-eating pacus to flesh-eating piranhas. |
format | Online Article Text |
id | pubmed-5533729 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-55337292017-08-03 A unique Cretaceous–Paleogene lineage of piranha-jawed pycnodont fishes Vullo, Romain Cavin, Lionel Khalloufi, Bouziane Amaghzaz, Mbarek Bardet, Nathalie Jalil, Nour-Eddine Jourani, Essaid Khaldoune, Fatima Gheerbrant, Emmanuel Sci Rep Article The extinct group of the Pycnodontiformes is one of the most characteristic components of the Mesozoic and early Cenozoic fish faunas. These ray-finned fishes, which underwent an explosive morphological diversification during the Late Cretaceous, are generally regarded as typical shell-crushers. Here we report unusual cutting-type dentitions from the Paleogene of Morocco which are assigned to a new genus of highly specialized pycnodont fish. This peculiar taxon represents the last member of a new, previously undetected 40-million-year lineage (Serrasalmimidae fam. nov., including two other new genera and Polygyrodus White, 1927) ranging back to the early Late Cretaceous and leading to exclusively carnivorous predatory forms, unique and unexpected among pycnodonts. Our discovery indicates that latest Cretaceous–earliest Paleogene pycnodonts occupied more diverse trophic niches than previously thought, taking advantage of the apparition of new prey types in the changing marine ecosystems of this time interval. The evolutionary sequence of trophic specialization characterizing this new group of pycnodontiforms is strikingly similar to that observed within serrasalmid characiforms, from seed- and fruit-eating pacus to flesh-eating piranhas. Nature Publishing Group UK 2017-07-28 /pmc/articles/PMC5533729/ /pubmed/28754956 http://dx.doi.org/10.1038/s41598-017-06792-x Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Vullo, Romain Cavin, Lionel Khalloufi, Bouziane Amaghzaz, Mbarek Bardet, Nathalie Jalil, Nour-Eddine Jourani, Essaid Khaldoune, Fatima Gheerbrant, Emmanuel A unique Cretaceous–Paleogene lineage of piranha-jawed pycnodont fishes |
title | A unique Cretaceous–Paleogene lineage of piranha-jawed pycnodont fishes |
title_full | A unique Cretaceous–Paleogene lineage of piranha-jawed pycnodont fishes |
title_fullStr | A unique Cretaceous–Paleogene lineage of piranha-jawed pycnodont fishes |
title_full_unstemmed | A unique Cretaceous–Paleogene lineage of piranha-jawed pycnodont fishes |
title_short | A unique Cretaceous–Paleogene lineage of piranha-jawed pycnodont fishes |
title_sort | unique cretaceous–paleogene lineage of piranha-jawed pycnodont fishes |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5533729/ https://www.ncbi.nlm.nih.gov/pubmed/28754956 http://dx.doi.org/10.1038/s41598-017-06792-x |
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