The first Peruvian record of Enchodus (Actinopterygii, Aulopiformes, Enchodontidae) in the Upper Cretaceous Vivian Formation

ABSTRACT We describe isolated teleostean teeth found in no association with the jaw bone. The specimens have been recovered in Late Cretaceous marine deposits of the Vivian Formation in the Peruvian Sub-Andean Region. The deposition sequence from where the teeth come is interpreted as a shallowing-u...

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Autores principales:	Gouiric-Cavalli,Soledad, Cione,Alberto L., Tineo,David E., Pérez,Leandro M., Iribarne,Martín, Allcca-Torres,Miguel A., Poiré,Daniel G.
Lenguaje:	English
Publicado:	Servicio Nacional de Geología y Minería (SERNAGEOMIN) 2021
Materias:	Fishes Actinopterygii Peruvian Sub-Andean Region South America
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062021000200303
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id	oai:scielo:S0718-71062021000200303
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spelling	oai:scielo:S0718-710620210002003032021-07-28The first Peruvian record of Enchodus (Actinopterygii, Aulopiformes, Enchodontidae) in the Upper Cretaceous Vivian FormationGouiric-Cavalli,SoledadCione,Alberto L.Tineo,David E.Pérez,Leandro M.Iribarne,MartínAllcca-Torres,Miguel A.Poiré,Daniel G. Fishes Actinopterygii Peruvian Sub-Andean Region South America ABSTRACT We describe isolated teleostean teeth found in no association with the jaw bone. The specimens have been recovered in Late Cretaceous marine deposits of the Vivian Formation in the Peruvian Sub-Andean Region. The deposition sequence from where the teeth come is interpreted as a shallowing-upward sequence of low salinity. The fish material is identified as Enchodus aff. E. gladiolus based on the presence of a small but well-developed post-apical barb, an anterior cutting edge, the crown is symmetrical in cross-section, have a sigmoidal profile, and bears strong ridges (=striations). The Peruvian material differs from the typical E. gladiolus teeth in having a faintly serrated anterior cutting edge which is absent in most specimens referred to E. gladiolus. We also highlight that taxonomic assignments made based on isolated teeth must be taken with care. Despite scarce, the material recovered denotes that the marine units of Peru can give valuable information about the Pacific fish fauna during the Late Cretaceous.info:eu-repo/semantics/openAccessServicio Nacional de Geología y Minería (SERNAGEOMIN)Andean geology v.48 n.2 20212021-05-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062021000200303en10.5027/andgeov48n2-3337
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Fishes Actinopterygii Peruvian Sub-Andean Region South America
spellingShingle	Fishes Actinopterygii Peruvian Sub-Andean Region South America Gouiric-Cavalli,Soledad Cione,Alberto L. Tineo,David E. Pérez,Leandro M. Iribarne,Martín Allcca-Torres,Miguel A. Poiré,Daniel G. The first Peruvian record of Enchodus (Actinopterygii, Aulopiformes, Enchodontidae) in the Upper Cretaceous Vivian Formation
description	ABSTRACT We describe isolated teleostean teeth found in no association with the jaw bone. The specimens have been recovered in Late Cretaceous marine deposits of the Vivian Formation in the Peruvian Sub-Andean Region. The deposition sequence from where the teeth come is interpreted as a shallowing-upward sequence of low salinity. The fish material is identified as Enchodus aff. E. gladiolus based on the presence of a small but well-developed post-apical barb, an anterior cutting edge, the crown is symmetrical in cross-section, have a sigmoidal profile, and bears strong ridges (=striations). The Peruvian material differs from the typical E. gladiolus teeth in having a faintly serrated anterior cutting edge which is absent in most specimens referred to E. gladiolus. We also highlight that taxonomic assignments made based on isolated teeth must be taken with care. Despite scarce, the material recovered denotes that the marine units of Peru can give valuable information about the Pacific fish fauna during the Late Cretaceous.
author	Gouiric-Cavalli,Soledad Cione,Alberto L. Tineo,David E. Pérez,Leandro M. Iribarne,Martín Allcca-Torres,Miguel A. Poiré,Daniel G.
author_facet	Gouiric-Cavalli,Soledad Cione,Alberto L. Tineo,David E. Pérez,Leandro M. Iribarne,Martín Allcca-Torres,Miguel A. Poiré,Daniel G.
author_sort	Gouiric-Cavalli,Soledad
title	The first Peruvian record of Enchodus (Actinopterygii, Aulopiformes, Enchodontidae) in the Upper Cretaceous Vivian Formation
title_short	The first Peruvian record of Enchodus (Actinopterygii, Aulopiformes, Enchodontidae) in the Upper Cretaceous Vivian Formation
title_full	The first Peruvian record of Enchodus (Actinopterygii, Aulopiformes, Enchodontidae) in the Upper Cretaceous Vivian Formation
title_fullStr	The first Peruvian record of Enchodus (Actinopterygii, Aulopiformes, Enchodontidae) in the Upper Cretaceous Vivian Formation
title_full_unstemmed	The first Peruvian record of Enchodus (Actinopterygii, Aulopiformes, Enchodontidae) in the Upper Cretaceous Vivian Formation
title_sort	first peruvian record of enchodus (actinopterygii, aulopiformes, enchodontidae) in the upper cretaceous vivian formation
publisher	Servicio Nacional de Geología y Minería (SERNAGEOMIN)
publishDate	2021
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062021000200303
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The first Peruvian record of Enchodus (Actinopterygii, Aulopiformes, Enchodontidae) in the Upper Cretaceous Vivian Formation

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