Lamniform shark teeth from the late cretaceous of southernmost South America (Santa Cruz province, Argentina).

Here we report multiple lamniform shark teeth recovered from fluvial sediments in the (Campanian-Maastrichtian) Cerro Fortaleza Formation, Santa Cruz Province, Argentina. This small tooth assemblage is compared to various lamniform sharks possessing similar dental morphologies, including Archaeolamn...

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Autores principales:	Elena R Schroeter, Victoria M Egerton, Lucio M Ibiricu, Kenneth J Lacovara
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/83f5f1f3b6ba4163b58824db1129e430
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spelling	oai:doaj.org-article:83f5f1f3b6ba4163b58824db1129e4302021-11-25T06:03:51ZLamniform shark teeth from the late cretaceous of southernmost South America (Santa Cruz province, Argentina).1932-620310.1371/journal.pone.0104800https://doaj.org/article/83f5f1f3b6ba4163b58824db1129e4302014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/25141301/?tool=EBIhttps://doaj.org/toc/1932-6203Here we report multiple lamniform shark teeth recovered from fluvial sediments in the (Campanian-Maastrichtian) Cerro Fortaleza Formation, Santa Cruz Province, Argentina. This small tooth assemblage is compared to various lamniform sharks possessing similar dental morphologies, including Archaeolamna, Cretalamna, Dwardius, Dallasiella, and Cretodus. Although the teeth share numerous morphological features with the genus Archaeolamna, including a developed neck that maintains a relatively consistent width along the base of the crown, the small sample size and incomplete nature of these specimens precludes definitive taxonomic assignment. Regardless, the discovery of selachian teeth unique from those previously described for the region broadens the known diversity of Late Cretaceous South American sharks. Additionally, the discovery of the teeth in fluvial sandstone may indicate a euryhaline paleobiology in the lamniform taxon or taxa represented by this tooth assemblage.Elena R SchroeterVictoria M EgertonLucio M IbiricuKenneth J LacovaraPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 8, p e104800 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Elena R Schroeter Victoria M Egerton Lucio M Ibiricu Kenneth J Lacovara Lamniform shark teeth from the late cretaceous of southernmost South America (Santa Cruz province, Argentina).
description	Here we report multiple lamniform shark teeth recovered from fluvial sediments in the (Campanian-Maastrichtian) Cerro Fortaleza Formation, Santa Cruz Province, Argentina. This small tooth assemblage is compared to various lamniform sharks possessing similar dental morphologies, including Archaeolamna, Cretalamna, Dwardius, Dallasiella, and Cretodus. Although the teeth share numerous morphological features with the genus Archaeolamna, including a developed neck that maintains a relatively consistent width along the base of the crown, the small sample size and incomplete nature of these specimens precludes definitive taxonomic assignment. Regardless, the discovery of selachian teeth unique from those previously described for the region broadens the known diversity of Late Cretaceous South American sharks. Additionally, the discovery of the teeth in fluvial sandstone may indicate a euryhaline paleobiology in the lamniform taxon or taxa represented by this tooth assemblage.
format	article
author	Elena R Schroeter Victoria M Egerton Lucio M Ibiricu Kenneth J Lacovara
author_facet	Elena R Schroeter Victoria M Egerton Lucio M Ibiricu Kenneth J Lacovara
author_sort	Elena R Schroeter
title	Lamniform shark teeth from the late cretaceous of southernmost South America (Santa Cruz province, Argentina).
title_short	Lamniform shark teeth from the late cretaceous of southernmost South America (Santa Cruz province, Argentina).
title_full	Lamniform shark teeth from the late cretaceous of southernmost South America (Santa Cruz province, Argentina).
title_fullStr	Lamniform shark teeth from the late cretaceous of southernmost South America (Santa Cruz province, Argentina).
title_full_unstemmed	Lamniform shark teeth from the late cretaceous of southernmost South America (Santa Cruz province, Argentina).
title_sort	lamniform shark teeth from the late cretaceous of southernmost south america (santa cruz province, argentina).
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/83f5f1f3b6ba4163b58824db1129e430
work_keys_str_mv	AT elenarschroeter lamniformsharkteethfromthelatecretaceousofsouthernmostsouthamericasantacruzprovinceargentina AT victoriamegerton lamniformsharkteethfromthelatecretaceousofsouthernmostsouthamericasantacruzprovinceargentina AT luciomibiricu lamniformsharkteethfromthelatecretaceousofsouthernmostsouthamericasantacruzprovinceargentina AT kennethjlacovara lamniformsharkteethfromthelatecretaceousofsouthernmostsouthamericasantacruzprovinceargentina
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Lamniform shark teeth from the late cretaceous of southernmost South America (Santa Cruz province, Argentina).

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