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A new lamniform shark Protolamna ricaurtensis sp. nov. from the Lower Cretaceous of Colombia


Carrillo-Briceño, Jorge D; Parra, Juan; Luque, Javier (2019). A new lamniform shark Protolamna ricaurtensis sp. nov. from the Lower Cretaceous of Colombia. Cretaceous research, 95:336-340.

Abstract

The Lower Cretaceous record of lamniforms from South America is scarce and poorly known, containing only two reports of isolated teeth from the upper Hauterivian of Argentina and the Albian of Peru. Here, we describe a partial articulated tooth set referable to †Protolamna ricaurtensis sp. nov. from the upper Barremian–lower Aptian deposits of the Paja Formation (Andes of Colombia). The new species corresponds to one of the oldest fossil lamniforms to date reported from South America. This articulated tooth set is the only known for the family †Pseudoscapanorhynchidae, and possibly the oldest in its type for a lamniform from the Lower Cretaceous. Our findings offer new insights in to the lamniform paleodiversity of the northwestern margin of Gondwana during the Lower Cretaceous.
Keywords Mesozoic Barremian Aptian Elasmobranchii South America Andes

Abstract

The Lower Cretaceous record of lamniforms from South America is scarce and poorly known, containing only two reports of isolated teeth from the upper Hauterivian of Argentina and the Albian of Peru. Here, we describe a partial articulated tooth set referable to †Protolamna ricaurtensis sp. nov. from the upper Barremian–lower Aptian deposits of the Paja Formation (Andes of Colombia). The new species corresponds to one of the oldest fossil lamniforms to date reported from South America. This articulated tooth set is the only known for the family †Pseudoscapanorhynchidae, and possibly the oldest in its type for a lamniform from the Lower Cretaceous. Our findings offer new insights in to the lamniform paleodiversity of the northwestern margin of Gondwana during the Lower Cretaceous.
Keywords Mesozoic Barremian Aptian Elasmobranchii South America Andes

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Paleontological Institute and Museum
Dewey Decimal Classification:560 Fossils & prehistoric life
Scopus Subject Areas:Physical Sciences > Paleontology
Uncontrolled Keywords:Palaeontology
Language:English
Date:1 March 2019
Deposited On:19 Dec 2018 13:13
Last Modified:13 May 2020 22:31
Publisher:Elsevier
ISSN:0195-6671
OA Status:Green
Publisher DOI:https://doi.org/10.1016/j.cretres.2018.12.007

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