Evidence for a novel cranial thermoregulatory pathway in thalattosuchian crocodylomorphs

Autores
Young, Mark T.; Bowman, Charlotte I. W.; Erb, Arthur; Schwab, Julia A.; Witmer, Lawrence; Herrera, Laura Yanina; Brusatte, Stephen L.
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Thalattosuchian crocodylomorphs were a diverse clade that lived from the Early Jurassic to the Early Cretaceous. The subclade Metriorhynchoidea underwent a remarkable transition, evolving from semi-aquatic ambush predators into fully aquatic forms living in the open oceans. Thalattosuchians share a peculiar palatal morphology with semi-aquatic and aquatic fossil cetaceans: paired anteroposteriorly aligned grooves along the palatal surface of the bony secondary palate. In extant cetaceans, these grooves are continuous with the greater palatine artery foramina, arteries that supply their oral thermoregulatory structures. Herein, we investigate the origins of thalattosuchian palatal grooves by examining CT scans of six thalattosuchian species (one teleosauroid, two early-diverging metriorhynchoids and three metriorhynchids), and CT scans of eleven extant crocodylian species. All thalattosuchians had paired osseous canals, enclosed by the palatines, that connect the nasal cavity to the oral cavity. These osseous canals open into the oral cavity via foramina at the posterior terminus of the palatal grooves. Extant crocodylians lack both the external grooves and the internal canals. We posit that in thalattosuchians these novel palatal canals transmitted hypertrophied medial nasal vessels (artery and vein), creating a novel heat exchange pathway connecting the palatal vascular plexus to the endocranial region. Given the general hypertrophy of thalattosuchian cephalic vasculature, and their increased blood flow and volume, thalattosuchians would have required a more extensive suite of thermoregulatory pathways to maintain stable temperatures for their neurosensory tissues.
Fil: Young, Mark T.. LWL-Museum für Naturkunde; Alemania. University of Edinburgh; Reino Unido
Fil: Bowman, Charlotte I. W.. University of Edinburgh; Reino Unido
Fil: Erb, Arthur. University of Edinburgh; Reino Unido
Fil: Schwab, Julia A.. University of Edinburgh; Reino Unido. University of Manchester; Reino Unido
Fil: Witmer, Lawrence. Ohio University; Estados Unidos
Fil: Herrera, Laura Yanina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Brusatte, Stephen L.. University of Edinburgh; Reino Unido
Materia
CROCODYLOMORPHA
METRIORHYNCHIDAE
THALATTOSUCHIA
THERMOREGULATION
VASCULATURE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/230764
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/230764
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Evidence for a novel cranial thermoregulatory pathway in thalattosuchian crocodylomorphsYoung, Mark T.Bowman, Charlotte I. W.Erb, ArthurSchwab, Julia A.Witmer, LawrenceHerrera, Laura YaninaBrusatte, Stephen L.CROCODYLOMORPHAMETRIORHYNCHIDAETHALATTOSUCHIATHERMOREGULATIONVASCULATUREhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Thalattosuchian crocodylomorphs were a diverse clade that lived from the Early Jurassic to the Early Cretaceous. The subclade Metriorhynchoidea underwent a remarkable transition, evolving from semi-aquatic ambush predators into fully aquatic forms living in the open oceans. Thalattosuchians share a peculiar palatal morphology with semi-aquatic and aquatic fossil cetaceans: paired anteroposteriorly aligned grooves along the palatal surface of the bony secondary palate. In extant cetaceans, these grooves are continuous with the greater palatine artery foramina, arteries that supply their oral thermoregulatory structures. Herein, we investigate the origins of thalattosuchian palatal grooves by examining CT scans of six thalattosuchian species (one teleosauroid, two early-diverging metriorhynchoids and three metriorhynchids), and CT scans of eleven extant crocodylian species. All thalattosuchians had paired osseous canals, enclosed by the palatines, that connect the nasal cavity to the oral cavity. These osseous canals open into the oral cavity via foramina at the posterior terminus of the palatal grooves. Extant crocodylians lack both the external grooves and the internal canals. We posit that in thalattosuchians these novel palatal canals transmitted hypertrophied medial nasal vessels (artery and vein), creating a novel heat exchange pathway connecting the palatal vascular plexus to the endocranial region. Given the general hypertrophy of thalattosuchian cephalic vasculature, and their increased blood flow and volume, thalattosuchians would have required a more extensive suite of thermoregulatory pathways to maintain stable temperatures for their neurosensory tissues.Fil: Young, Mark T.. LWL-Museum für Naturkunde; Alemania. University of Edinburgh; Reino UnidoFil: Bowman, Charlotte I. W.. University of Edinburgh; Reino UnidoFil: Erb, Arthur. University of Edinburgh; Reino UnidoFil: Schwab, Julia A.. University of Edinburgh; Reino Unido. University of Manchester; Reino UnidoFil: Witmer, Lawrence. Ohio University; Estados UnidosFil: Herrera, Laura Yanina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Brusatte, Stephen L.. University of Edinburgh; Reino UnidoPeerJ Inc2023-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/230764Young, Mark T.; Bowman, Charlotte I. W.; Erb, Arthur; Schwab, Julia A.; Witmer, Lawrence; et al.; Evidence for a novel cranial thermoregulatory pathway in thalattosuchian crocodylomorphs; PeerJ Inc; PeerJ; 11; 5-2023; 1-262167-8359CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://peerj.com/articles/15353/info:eu-repo/semantics/altIdentifier/doi/10.7717/peerj.15353info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:45:47Zoai:ri.conicet.gov.ar:11336/230764instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:45:47.845CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Evidence for a novel cranial thermoregulatory pathway in thalattosuchian crocodylomorphs
title Evidence for a novel cranial thermoregulatory pathway in thalattosuchian crocodylomorphs
spellingShingle Evidence for a novel cranial thermoregulatory pathway in thalattosuchian crocodylomorphs
Young, Mark T.
CROCODYLOMORPHA
METRIORHYNCHIDAE
THALATTOSUCHIA
THERMOREGULATION
VASCULATURE
title_short Evidence for a novel cranial thermoregulatory pathway in thalattosuchian crocodylomorphs
title_full Evidence for a novel cranial thermoregulatory pathway in thalattosuchian crocodylomorphs
title_fullStr Evidence for a novel cranial thermoregulatory pathway in thalattosuchian crocodylomorphs
title_full_unstemmed Evidence for a novel cranial thermoregulatory pathway in thalattosuchian crocodylomorphs
title_sort Evidence for a novel cranial thermoregulatory pathway in thalattosuchian crocodylomorphs
dc.creator.none.fl_str_mv Young, Mark T.
Bowman, Charlotte I. W.
Erb, Arthur
Schwab, Julia A.
Witmer, Lawrence
Herrera, Laura Yanina
Brusatte, Stephen L.
author Young, Mark T.
author_facet Young, Mark T.
Bowman, Charlotte I. W.
Erb, Arthur
Schwab, Julia A.
Witmer, Lawrence
Herrera, Laura Yanina
Brusatte, Stephen L.
author_role author
author2 Bowman, Charlotte I. W.
Erb, Arthur
Schwab, Julia A.
Witmer, Lawrence
Herrera, Laura Yanina
Brusatte, Stephen L.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv CROCODYLOMORPHA
METRIORHYNCHIDAE
THALATTOSUCHIA
THERMOREGULATION
VASCULATURE
topic CROCODYLOMORPHA
METRIORHYNCHIDAE
THALATTOSUCHIA
THERMOREGULATION
VASCULATURE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Thalattosuchian crocodylomorphs were a diverse clade that lived from the Early Jurassic to the Early Cretaceous. The subclade Metriorhynchoidea underwent a remarkable transition, evolving from semi-aquatic ambush predators into fully aquatic forms living in the open oceans. Thalattosuchians share a peculiar palatal morphology with semi-aquatic and aquatic fossil cetaceans: paired anteroposteriorly aligned grooves along the palatal surface of the bony secondary palate. In extant cetaceans, these grooves are continuous with the greater palatine artery foramina, arteries that supply their oral thermoregulatory structures. Herein, we investigate the origins of thalattosuchian palatal grooves by examining CT scans of six thalattosuchian species (one teleosauroid, two early-diverging metriorhynchoids and three metriorhynchids), and CT scans of eleven extant crocodylian species. All thalattosuchians had paired osseous canals, enclosed by the palatines, that connect the nasal cavity to the oral cavity. These osseous canals open into the oral cavity via foramina at the posterior terminus of the palatal grooves. Extant crocodylians lack both the external grooves and the internal canals. We posit that in thalattosuchians these novel palatal canals transmitted hypertrophied medial nasal vessels (artery and vein), creating a novel heat exchange pathway connecting the palatal vascular plexus to the endocranial region. Given the general hypertrophy of thalattosuchian cephalic vasculature, and their increased blood flow and volume, thalattosuchians would have required a more extensive suite of thermoregulatory pathways to maintain stable temperatures for their neurosensory tissues.
Fil: Young, Mark T.. LWL-Museum für Naturkunde; Alemania. University of Edinburgh; Reino Unido
Fil: Bowman, Charlotte I. W.. University of Edinburgh; Reino Unido
Fil: Erb, Arthur. University of Edinburgh; Reino Unido
Fil: Schwab, Julia A.. University of Edinburgh; Reino Unido. University of Manchester; Reino Unido
Fil: Witmer, Lawrence. Ohio University; Estados Unidos
Fil: Herrera, Laura Yanina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Brusatte, Stephen L.. University of Edinburgh; Reino Unido
description Thalattosuchian crocodylomorphs were a diverse clade that lived from the Early Jurassic to the Early Cretaceous. The subclade Metriorhynchoidea underwent a remarkable transition, evolving from semi-aquatic ambush predators into fully aquatic forms living in the open oceans. Thalattosuchians share a peculiar palatal morphology with semi-aquatic and aquatic fossil cetaceans: paired anteroposteriorly aligned grooves along the palatal surface of the bony secondary palate. In extant cetaceans, these grooves are continuous with the greater palatine artery foramina, arteries that supply their oral thermoregulatory structures. Herein, we investigate the origins of thalattosuchian palatal grooves by examining CT scans of six thalattosuchian species (one teleosauroid, two early-diverging metriorhynchoids and three metriorhynchids), and CT scans of eleven extant crocodylian species. All thalattosuchians had paired osseous canals, enclosed by the palatines, that connect the nasal cavity to the oral cavity. These osseous canals open into the oral cavity via foramina at the posterior terminus of the palatal grooves. Extant crocodylians lack both the external grooves and the internal canals. We posit that in thalattosuchians these novel palatal canals transmitted hypertrophied medial nasal vessels (artery and vein), creating a novel heat exchange pathway connecting the palatal vascular plexus to the endocranial region. Given the general hypertrophy of thalattosuchian cephalic vasculature, and their increased blood flow and volume, thalattosuchians would have required a more extensive suite of thermoregulatory pathways to maintain stable temperatures for their neurosensory tissues.
publishDate 2023
dc.date.none.fl_str_mv 2023-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/230764
Young, Mark T.; Bowman, Charlotte I. W.; Erb, Arthur; Schwab, Julia A.; Witmer, Lawrence; et al.; Evidence for a novel cranial thermoregulatory pathway in thalattosuchian crocodylomorphs; PeerJ Inc; PeerJ; 11; 5-2023; 1-26
2167-8359
CONICET Digital
CONICET
url http://hdl.handle.net/11336/230764
identifier_str_mv Young, Mark T.; Bowman, Charlotte I. W.; Erb, Arthur; Schwab, Julia A.; Witmer, Lawrence; et al.; Evidence for a novel cranial thermoregulatory pathway in thalattosuchian crocodylomorphs; PeerJ Inc; PeerJ; 11; 5-2023; 1-26
2167-8359
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://peerj.com/articles/15353/
info:eu-repo/semantics/altIdentifier/doi/10.7717/peerj.15353
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv PeerJ Inc
publisher.none.fl_str_mv PeerJ Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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