A new species of Allodaposuchus (Eusuchia, Crocodylia) from the Maastrichtian (Late Cretaceous) of Spain

Background. The Late Cretaceous is a keystone period to understand the origin and early radiation of Crocodylia, the group containing all extant lineages of crocodilians. Among the taxa described from the latest Cretaceous of Europe, the genus Allodaposuchus is one of the most common but also one of...

ver descrição completa

Detalhes bibliográficos
Autores: Blanco, Alejandro|||0000-0003-2527-932X, Fortuny, Josep, Vicente, Alba|||0000-0002-0313-7104, Luján, Àngel H.|||0000-0003-1844-0453, García-Marçà, Jordi Alexis, Sellés, Albert|||0000-0002-4637-6084
Formato: artículo
Fecha de publicación:2015
País:España
Recursos:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:185411
Acesso em linha:https://ddd.uab.cat/record/185411
https://dx.doi.org/urn:doi:10.7717/peerj.1171
Access Level:acceso abierto
Palavra-chave:Crocodylia
Endocranial morphology
Locomotion
Allodaposuchus
Paleoecology
Late Cretaceous
id ES_34b6ee14ff35adff6a67c452adc82275
oai_identifier_str oai:ddd.uab.cat:185411
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv A new species of Allodaposuchus (Eusuchia, Crocodylia) from the Maastrichtian (Late Cretaceous) of Spain
phylogenetic and paleobiological implications
title A new species of Allodaposuchus (Eusuchia, Crocodylia) from the Maastrichtian (Late Cretaceous) of Spain
spellingShingle A new species of Allodaposuchus (Eusuchia, Crocodylia) from the Maastrichtian (Late Cretaceous) of Spain
Blanco, Alejandro|||0000-0003-2527-932X
Crocodylia
Endocranial morphology
Locomotion
Allodaposuchus
Paleoecology
Late Cretaceous
title_short A new species of Allodaposuchus (Eusuchia, Crocodylia) from the Maastrichtian (Late Cretaceous) of Spain
title_full A new species of Allodaposuchus (Eusuchia, Crocodylia) from the Maastrichtian (Late Cretaceous) of Spain
title_fullStr A new species of Allodaposuchus (Eusuchia, Crocodylia) from the Maastrichtian (Late Cretaceous) of Spain
title_full_unstemmed A new species of Allodaposuchus (Eusuchia, Crocodylia) from the Maastrichtian (Late Cretaceous) of Spain
title_sort A new species of Allodaposuchus (Eusuchia, Crocodylia) from the Maastrichtian (Late Cretaceous) of Spain
dc.creator.none.fl_str_mv Blanco, Alejandro|||0000-0003-2527-932X
Fortuny, Josep
Vicente, Alba|||0000-0002-0313-7104
Luján, Àngel H.|||0000-0003-1844-0453
García-Marçà, Jordi Alexis
Sellés, Albert|||0000-0002-4637-6084
author Blanco, Alejandro|||0000-0003-2527-932X
author_facet Blanco, Alejandro|||0000-0003-2527-932X
Fortuny, Josep
Vicente, Alba|||0000-0002-0313-7104
Luján, Àngel H.|||0000-0003-1844-0453
García-Marçà, Jordi Alexis
Sellés, Albert|||0000-0002-4637-6084
author_role author
author2 Fortuny, Josep
Vicente, Alba|||0000-0002-0313-7104
Luján, Àngel H.|||0000-0003-1844-0453
García-Marçà, Jordi Alexis
Sellés, Albert|||0000-0002-4637-6084
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Crocodylia
Endocranial morphology
Locomotion
Allodaposuchus
Paleoecology
Late Cretaceous
topic Crocodylia
Endocranial morphology
Locomotion
Allodaposuchus
Paleoecology
Late Cretaceous
description Background. The Late Cretaceous is a keystone period to understand the origin and early radiation of Crocodylia, the group containing all extant lineages of crocodilians. Among the taxa described from the latest Cretaceous of Europe, the genus Allodaposuchus is one of the most common but also one of the most controversial. However, because of its fragmentary record, several issues regarding its phylogenetic emplacement and its ecology remain unsolved or unknown. The discovery of a single specimen attributed to Allodaposuchus, represented by both cranial and postcranial remains, from the Casa Fabà site (Tremp Basin, NE Spain) in the lower red unit of the Tremp Fm. (early Maastrichtian, Late Cretaceous) offers a unique opportunity to deepen in the phylogenetic relationships of the group and its ecological features. Methods. The specimen is described in detail, and CT scan of the skull is performed in order to study the endocranial morphology as well as paratympanic sinuses configuration. In addition, myological and phylogenetic analyses are also carried out on the specimen for to shed light in ecological and phylogenetic issues, respectively. Results. The specimen described herein represents a new species, Allodaposuchus hulki sp. nov., closely related to the Romanian A. precedens. The CT scan of the skull revealed an unexpected paratympanic sinuses configuration. Allosaposuchus hulki exhibits an "anterodorsal tympanic sinus" not observed in any other extant or extinct crocodilian. The caudal tympanic recesses are extremely enlarged, and the expanded quadratic sinus seems to be connected to the middle-ear channel. Phylogenetic analyses confirm the emplacement of the informal taxonomic group 'Allodaposuchia' at the base of Crocodylia, being considered the sister group of Borealosuchus and Planocraniidae. Discussion. Although this is a preliminary hypothesis, the unique paratympanic configuration displayed by A. hulki suggests that it could possess a high-specialized auditory system. Further, the large cranial cavities could help to reduce the weight of the cranium. Concerning the postcranial skeleton, Allodaposuchus hulki shows massive and robust vertebrae and forelimb bones, suggesting it could have a bulky body. The myological study performed on the anterior limb elements supports this interpretation. In addition, several bone and muscular features seem to point at a semi-erected position of the forelimbs during terrestrial locomotion. Taking all the above results into consideration, it seems plausible to suggest that A. hulki could conduct large incursions out of the water and have a semi-terrestrial lifestyle.
publishDate 2015
dc.date.none.fl_str_mv 2
2015-01-01
2015
2015-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/185411
https://dx.doi.org/urn:doi:10.7717/peerj.1171
url https://ddd.uab.cat/record/185411
https://dx.doi.org/urn:doi:10.7717/peerj.1171
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Ciencia e Innovación https://doi.org/10.13039/501100004837 CGL2011-30069-C02-01
Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 CGL2011-27869
Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 FI-DGR/2013/FI_B01059
Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 FI-DGR/2012/FI_B01221
Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 BES-2012-05783
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869405835537416192
spelling A new species of Allodaposuchus (Eusuchia, Crocodylia) from the Maastrichtian (Late Cretaceous) of Spainphylogenetic and paleobiological implicationsBlanco, Alejandro|||0000-0003-2527-932XFortuny, JosepVicente, Alba|||0000-0002-0313-7104Luján, Àngel H.|||0000-0003-1844-0453García-Marçà, Jordi AlexisSellés, Albert|||0000-0002-4637-6084CrocodyliaEndocranial morphologyLocomotionAllodaposuchusPaleoecologyLate CretaceousBackground. The Late Cretaceous is a keystone period to understand the origin and early radiation of Crocodylia, the group containing all extant lineages of crocodilians. Among the taxa described from the latest Cretaceous of Europe, the genus Allodaposuchus is one of the most common but also one of the most controversial. However, because of its fragmentary record, several issues regarding its phylogenetic emplacement and its ecology remain unsolved or unknown. The discovery of a single specimen attributed to Allodaposuchus, represented by both cranial and postcranial remains, from the Casa Fabà site (Tremp Basin, NE Spain) in the lower red unit of the Tremp Fm. (early Maastrichtian, Late Cretaceous) offers a unique opportunity to deepen in the phylogenetic relationships of the group and its ecological features. Methods. The specimen is described in detail, and CT scan of the skull is performed in order to study the endocranial morphology as well as paratympanic sinuses configuration. In addition, myological and phylogenetic analyses are also carried out on the specimen for to shed light in ecological and phylogenetic issues, respectively. Results. The specimen described herein represents a new species, Allodaposuchus hulki sp. nov., closely related to the Romanian A. precedens. The CT scan of the skull revealed an unexpected paratympanic sinuses configuration. Allosaposuchus hulki exhibits an "anterodorsal tympanic sinus" not observed in any other extant or extinct crocodilian. The caudal tympanic recesses are extremely enlarged, and the expanded quadratic sinus seems to be connected to the middle-ear channel. Phylogenetic analyses confirm the emplacement of the informal taxonomic group 'Allodaposuchia' at the base of Crocodylia, being considered the sister group of Borealosuchus and Planocraniidae. Discussion. Although this is a preliminary hypothesis, the unique paratympanic configuration displayed by A. hulki suggests that it could possess a high-specialized auditory system. Further, the large cranial cavities could help to reduce the weight of the cranium. Concerning the postcranial skeleton, Allodaposuchus hulki shows massive and robust vertebrae and forelimb bones, suggesting it could have a bulky body. The myological study performed on the anterior limb elements supports this interpretation. In addition, several bone and muscular features seem to point at a semi-erected position of the forelimbs during terrestrial locomotion. Taking all the above results into consideration, it seems plausible to suggest that A. hulki could conduct large incursions out of the water and have a semi-terrestrial lifestyle. 22015-01-0120152015-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/185411https://dx.doi.org/urn:doi:10.7717/peerj.1171reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengMinisterio de Ciencia e Innovación https://doi.org/10.13039/501100004837 CGL2011-30069-C02-01Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 CGL2011-27869Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 FI-DGR/2013/FI_B01059Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 FI-DGR/2012/FI_B01221Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 BES-2012-05783open accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:1854112026-06-06T12:50:31Z
score 15,301603

Registos relacionados