Valanginian occurrence of Pelomedusoides turtles in northern South America: revision of this hypothesis based on a new fossil remain

Edwin Alberto Cadena

doi:10.7717/peerj.9810

Valanginian occurrence of Pelomedusoides turtles in northern South America: revision of this hypothesis based on a new fossil remain

Título traducido de la contribución: Ocurrencia de tortugas Pelomedusoides en el Valanginiano en el norte de Suramérica, revisión de esta hipótesis basado en nuevos remanentes fósiles

Edwin Alberto Cadena

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

4 Citas (Scopus)

Resumen

Pelomedusoides constituye el grupo más diverso de tortugas de cuello lateral del Mesozoico y Cenozoico. Sin embargo, su origen sigue siendo poco conocido y controvertido. Los restos fósiles de la Formación Rosa Blanca del Cretácico Temprano (Valanginian) de Colombia fueron descritos hace casi una década como potencialmente pertenecientes a Podocnemidoidea (un gran subclade dentro de Pelomedusoides) y representando uno de los registros más antiguos de este grupo de tortugas. Aquí, reviso esta hipótesis basándome en un nuevo espécimen fragmentario de la Formación Rosa Blanca, representado por una parte derecha del puente del plastrón, que incluye el mesoplastrón y la mayoría de los periféricos 5 a 7. La forma equidimensional del mesoplatrón me permite apoyar su atribución como perteneciente a Pelomedusoides, un grupo al que también se atribuye aquí el material previamente podocnemidoide. Aunque el material pelomesudoides Valanginiano de Colombia es todavía demasiado fragmentario como para ser considerado el registro indiscutible más antiguo del clado Pelomedusoides, su aparición está al menos de acuerdo con las hipótesis filogenéticas moleculares actuales que sugieren que se separaron de los Chelidae durante el Jurásico y deberían ocurrir en el Registro fósil del Jurásico tardío y del Cretácico temprano.

Título traducido de la contribución	Ocurrencia de tortugas Pelomedusoides en el Valanginiano en el norte de Suramérica, revisión de esta hipótesis basado en nuevos remanentes fósiles
Idioma original	Inglés estadounidense
Número de artículo	e9810
Publicación	PeerJ
Volumen	8
DOI	https://doi.org/10.7717/peerj.9810
Estado	Publicada - ago. 24 2020

Áreas temáticas de ASJC Scopus

Neurociencias General
Bioquímica, Genética y Biología Molecular General
Ciencias Agrícolas y Biológicas General

Acceder al documento

10.7717/peerj.9810

Otros archivos y enlaces

Citar esto

@article{114631fd8c874ffc99751f1f4318647b,

title = "Valanginian occurrence of Pelomedusoides turtles in northern South America: revision of this hypothesis based on a new fossil remain",

abstract = "Pelomedusoides constitutes the most diverse group of Mesozoic and Cenozoic side-necked turtles. However, when it originated is still being poorly known and controversial. Fossil remains from the Early Cretaceous (Valanginian) Rosa Blanca Formation of Colombia were described almost a decade ago as potentially belonging to Podocnemidoidea (a large subclade inside Pelomedusoides) and representing one of the earliest records of this group of turtles. Here, I revise this hypothesis based on a new fragmentary specimen from the Rosa Blanca Formation, represented by a right portion of the shell bridge, including the mesoplastron and most of peripherals 5 to 7. The equidimensional shape of the mesoplatron allows me to support its attribution as belonging to Pelomedusoides, a group to which the previously podocnemidoid material is also attributed here. Although the Valanginian pelomesudoid material from Colombia is still too fragmentary as to be considered the earliest indisputable record of the Pelomedusoides clade, their occurrence is at least in agreement with current molecular phylogenetic hypotheses that suggest they split from Chelidae during the Jurassic and should occur in the Late Jurassic and Early Cretaceous fossil record.",

author = "Cadena, {Edwin Alberto}",

note = "Funding Information: This study was supported by Universidad del Rosario, Fondos de Arranque 2018 (code IV-TFA022). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Publisher Copyright: {\textcopyright} 2020 Cadena Distributed under Creative Commons CC-BY 4.0 Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2020",

month = aug,

day = "24",

doi = "10.7717/peerj.9810",

language = "English (US)",

volume = "8",

journal = "PeerJ",

issn = "2167-8359",

publisher = "PeerJ Inc.",

}

TY - JOUR

T1 - Valanginian occurrence of Pelomedusoides turtles in northern South America: revision of this hypothesis based on a new fossil remain

AU - Cadena, Edwin Alberto

N1 - Funding Information: This study was supported by Universidad del Rosario, Fondos de Arranque 2018 (code IV-TFA022). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Publisher Copyright: © 2020 Cadena Distributed under Creative Commons CC-BY 4.0 Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/8/24

Y1 - 2020/8/24

N2 - Pelomedusoides constitutes the most diverse group of Mesozoic and Cenozoic side-necked turtles. However, when it originated is still being poorly known and controversial. Fossil remains from the Early Cretaceous (Valanginian) Rosa Blanca Formation of Colombia were described almost a decade ago as potentially belonging to Podocnemidoidea (a large subclade inside Pelomedusoides) and representing one of the earliest records of this group of turtles. Here, I revise this hypothesis based on a new fragmentary specimen from the Rosa Blanca Formation, represented by a right portion of the shell bridge, including the mesoplastron and most of peripherals 5 to 7. The equidimensional shape of the mesoplatron allows me to support its attribution as belonging to Pelomedusoides, a group to which the previously podocnemidoid material is also attributed here. Although the Valanginian pelomesudoid material from Colombia is still too fragmentary as to be considered the earliest indisputable record of the Pelomedusoides clade, their occurrence is at least in agreement with current molecular phylogenetic hypotheses that suggest they split from Chelidae during the Jurassic and should occur in the Late Jurassic and Early Cretaceous fossil record.

AB - Pelomedusoides constitutes the most diverse group of Mesozoic and Cenozoic side-necked turtles. However, when it originated is still being poorly known and controversial. Fossil remains from the Early Cretaceous (Valanginian) Rosa Blanca Formation of Colombia were described almost a decade ago as potentially belonging to Podocnemidoidea (a large subclade inside Pelomedusoides) and representing one of the earliest records of this group of turtles. Here, I revise this hypothesis based on a new fragmentary specimen from the Rosa Blanca Formation, represented by a right portion of the shell bridge, including the mesoplastron and most of peripherals 5 to 7. The equidimensional shape of the mesoplatron allows me to support its attribution as belonging to Pelomedusoides, a group to which the previously podocnemidoid material is also attributed here. Although the Valanginian pelomesudoid material from Colombia is still too fragmentary as to be considered the earliest indisputable record of the Pelomedusoides clade, their occurrence is at least in agreement with current molecular phylogenetic hypotheses that suggest they split from Chelidae during the Jurassic and should occur in the Late Jurassic and Early Cretaceous fossil record.

UR - http://www.scopus.com/inward/record.url?scp=85091476994&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85091476994&partnerID=8YFLogxK

U2 - 10.7717/peerj.9810

DO - 10.7717/peerj.9810

M3 - Article

C2 - 32904119

AN - SCOPUS:85091476994

SN - 2167-8359

VL - 8

JO - PeerJ

JF - PeerJ

M1 - e9810

ER -

Valanginian occurrence of Pelomedusoides turtles in northern South America: revision of this hypothesis based on a new fossil remain

Resumen

Áreas temáticas de ASJC Scopus

Acceder al documento

Otros archivos y enlaces

Huella

Citar esto