The osteoderm microstructure in doswelliids and proterochampsids and its implications for palaeobiology of stem archosaurs

Autores
Ponce, Denis Alejandro; Cerda, Ignacio Alejandro; Desojo, Julia Brenda; Nesbitt, Sterling J.
Año de publicación
2017
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fil: Ponce, Denis A. Universidad Nacional de Río Negro; Argentina
Fil: Ponce, Denis A. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Cerda, Ignacio A. Universidad Nacional de Río Negro; Argentina
Fil: Desojo, Julia B. División Paleontología Vertebrados, Museo de La Plata, Universidad Nacional de La Plata; Argentina
Fil: Cerda, Ignacio A. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: Nesbitt, Sterling J. Department of Geosciences, Virginia Tech; Estados Unidos
Osteoderms are common in most archosauriform lineages, including basal forms, such as doswelliids and proterochampsids. In this survey, osteoderms of the doswelliids Doswellia kaltenbachi and Vancleavea campi, and proterochampsid Chanaresuchus bonapartei are examined to infer their palaeobiology, such as histogenesis, age estimation at death, development of external sculpturing, and palaeoecology. Doswelliid osteoderms have a trilaminar structure: two cortices of compact bone (external and basal) that enclose an internal core of cancellous bone. In contrast, Chanaresuchus bonapartei osteoderms are composed of entirely compact bone. The external ornamentation of Doswellia kaltenbachi is primarily formed and maintained by preferential bone growth. Conversely, a complex pattern of resorption and redeposition process is inferred in Archeopelta arborensis and Tarjadia ruthae. Vancleavea campi exhibits the highest degree of variation among doswelliids in its histogenesis (metaplasia), density and arrangement of vascularization and lack of sculpturing. The relatively high degree of compactness in the osteoderms of all the examined taxa is congruent with an aquatic or semi-aquatic lifestyle. In general, the osteoderm histology of doswelliids more closely resembles that of phytosaurs and pseudosuchians than that of proterochampsids.
Materia
Ciencias Exactas y Naturales (General)
Archosauria
Doswelliidae
Protero Champ Sidae
Palaeoecology
Microanatomy
Histology
Triassic
USA
Ciencias Exactas y Naturales (General)
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
RID-UNRN (UNRN)
Institución
Universidad Nacional de Río Negro
OAI Identificador
oai:rid.unrn.edu.ar:20.500.12049/2620
Acceder
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network_acronym_str RIDUNRN
repository_id_str 4369
network_name_str RID-UNRN (UNRN)
spelling The osteoderm microstructure in doswelliids and proterochampsids and its implications for palaeobiology of stem archosaursPonce, Denis AlejandroCerda, Ignacio AlejandroDesojo, Julia BrendaNesbitt, Sterling J.Ciencias Exactas y Naturales (General)ArchosauriaDoswelliidaeProtero Champ SidaePalaeoecologyMicroanatomyHistologyTriassicUSACiencias Exactas y Naturales (General)Fil: Ponce, Denis A. Universidad Nacional de Río Negro; ArgentinaFil: Ponce, Denis A. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Cerda, Ignacio A. Universidad Nacional de Río Negro; ArgentinaFil: Desojo, Julia B. División Paleontología Vertebrados, Museo de La Plata, Universidad Nacional de La Plata; ArgentinaFil: Cerda, Ignacio A. Instituto de Investigación en Paleobiología y Geología; ArgentinaFil: Nesbitt, Sterling J. Department of Geosciences, Virginia Tech; Estados UnidosOsteoderms are common in most archosauriform lineages, including basal forms, such as doswelliids and proterochampsids. In this survey, osteoderms of the doswelliids Doswellia kaltenbachi and Vancleavea campi, and proterochampsid Chanaresuchus bonapartei are examined to infer their palaeobiology, such as histogenesis, age estimation at death, development of external sculpturing, and palaeoecology. Doswelliid osteoderms have a trilaminar structure: two cortices of compact bone (external and basal) that enclose an internal core of cancellous bone. In contrast, Chanaresuchus bonapartei osteoderms are composed of entirely compact bone. The external ornamentation of Doswellia kaltenbachi is primarily formed and maintained by preferential bone growth. Conversely, a complex pattern of resorption and redeposition process is inferred in Archeopelta arborensis and Tarjadia ruthae. Vancleavea campi exhibits the highest degree of variation among doswelliids in its histogenesis (metaplasia), density and arrangement of vascularization and lack of sculpturing. The relatively high degree of compactness in the osteoderms of all the examined taxa is congruent with an aquatic or semi-aquatic lifestyle. In general, the osteoderm histology of doswelliids more closely resembles that of phytosaurs and pseudosuchians than that of proterochampsids.2017-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfPonce, Denis A., Cerda, Ignacio A., Desojo, Julia B., Nesbitt, Sterling J. (2017). The osteoderm microstructure in doswelliids and proterochampsids and its implications for palaeobiology of stem archosaurs. Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 62; 4; pp. 819-8310567-79201732-2421http://www.app.pan.pl/article/item/app003812017.htmlhttps://doi.org/10.4202/app.00381.2017http://hdl.handle.net/11336/66881https://rid.unrn.edu.ar/jspui/handle/20.500.12049/2620spa62Acta Palaeontologica Polonicainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:RID-UNRN (UNRN)instname:Universidad Nacional de Río Negro2025-09-29T14:29:15Zoai:rid.unrn.edu.ar:20.500.12049/2620instacron:UNRNInstitucionalhttps://rid.unrn.edu.ar/jspui/Universidad públicaNo correspondehttps://rid.unrn.edu.ar/oai/snrdrid@unrn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:43692025-09-29 14:29:15.576RID-UNRN (UNRN) - Universidad Nacional de Río Negrofalse
dc.title.none.fl_str_mv The osteoderm microstructure in doswelliids and proterochampsids and its implications for palaeobiology of stem archosaurs
title The osteoderm microstructure in doswelliids and proterochampsids and its implications for palaeobiology of stem archosaurs
spellingShingle The osteoderm microstructure in doswelliids and proterochampsids and its implications for palaeobiology of stem archosaurs
Ponce, Denis Alejandro
Ciencias Exactas y Naturales (General)
Archosauria
Doswelliidae
Protero Champ Sidae
Palaeoecology
Microanatomy
Histology
Triassic
USA
Ciencias Exactas y Naturales (General)
title_short The osteoderm microstructure in doswelliids and proterochampsids and its implications for palaeobiology of stem archosaurs
title_full The osteoderm microstructure in doswelliids and proterochampsids and its implications for palaeobiology of stem archosaurs
title_fullStr The osteoderm microstructure in doswelliids and proterochampsids and its implications for palaeobiology of stem archosaurs
title_full_unstemmed The osteoderm microstructure in doswelliids and proterochampsids and its implications for palaeobiology of stem archosaurs
title_sort The osteoderm microstructure in doswelliids and proterochampsids and its implications for palaeobiology of stem archosaurs
dc.creator.none.fl_str_mv Ponce, Denis Alejandro
Cerda, Ignacio Alejandro
Desojo, Julia Brenda
Nesbitt, Sterling J.
author Ponce, Denis Alejandro
author_facet Ponce, Denis Alejandro
Cerda, Ignacio Alejandro
Desojo, Julia Brenda
Nesbitt, Sterling J.
author_role author
author2 Cerda, Ignacio Alejandro
Desojo, Julia Brenda
Nesbitt, Sterling J.
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas y Naturales (General)
Archosauria
Doswelliidae
Protero Champ Sidae
Palaeoecology
Microanatomy
Histology
Triassic
USA
Ciencias Exactas y Naturales (General)
topic Ciencias Exactas y Naturales (General)
Archosauria
Doswelliidae
Protero Champ Sidae
Palaeoecology
Microanatomy
Histology
Triassic
USA
Ciencias Exactas y Naturales (General)
dc.description.none.fl_txt_mv Fil: Ponce, Denis A. Universidad Nacional de Río Negro; Argentina
Fil: Ponce, Denis A. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Cerda, Ignacio A. Universidad Nacional de Río Negro; Argentina
Fil: Desojo, Julia B. División Paleontología Vertebrados, Museo de La Plata, Universidad Nacional de La Plata; Argentina
Fil: Cerda, Ignacio A. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: Nesbitt, Sterling J. Department of Geosciences, Virginia Tech; Estados Unidos
Osteoderms are common in most archosauriform lineages, including basal forms, such as doswelliids and proterochampsids. In this survey, osteoderms of the doswelliids Doswellia kaltenbachi and Vancleavea campi, and proterochampsid Chanaresuchus bonapartei are examined to infer their palaeobiology, such as histogenesis, age estimation at death, development of external sculpturing, and palaeoecology. Doswelliid osteoderms have a trilaminar structure: two cortices of compact bone (external and basal) that enclose an internal core of cancellous bone. In contrast, Chanaresuchus bonapartei osteoderms are composed of entirely compact bone. The external ornamentation of Doswellia kaltenbachi is primarily formed and maintained by preferential bone growth. Conversely, a complex pattern of resorption and redeposition process is inferred in Archeopelta arborensis and Tarjadia ruthae. Vancleavea campi exhibits the highest degree of variation among doswelliids in its histogenesis (metaplasia), density and arrangement of vascularization and lack of sculpturing. The relatively high degree of compactness in the osteoderms of all the examined taxa is congruent with an aquatic or semi-aquatic lifestyle. In general, the osteoderm histology of doswelliids more closely resembles that of phytosaurs and pseudosuchians than that of proterochampsids.
description Fil: Ponce, Denis A. Universidad Nacional de Río Negro; Argentina
publishDate 2017
dc.date.none.fl_str_mv 2017-10
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 Ponce, Denis A., Cerda, Ignacio A., Desojo, Julia B., Nesbitt, Sterling J. (2017). The osteoderm microstructure in doswelliids and proterochampsids and its implications for palaeobiology of stem archosaurs. Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 62; 4; pp. 819-831
0567-7920
1732-2421
http://www.app.pan.pl/article/item/app003812017.html
https://doi.org/10.4202/app.00381.2017
http://hdl.handle.net/11336/66881
https://rid.unrn.edu.ar/jspui/handle/20.500.12049/2620
identifier_str_mv Ponce, Denis A., Cerda, Ignacio A., Desojo, Julia B., Nesbitt, Sterling J. (2017). The osteoderm microstructure in doswelliids and proterochampsids and its implications for palaeobiology of stem archosaurs. Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 62; 4; pp. 819-831
0567-7920
1732-2421
url http://www.app.pan.pl/article/item/app003812017.html
https://doi.org/10.4202/app.00381.2017
http://hdl.handle.net/11336/66881
https://rid.unrn.edu.ar/jspui/handle/20.500.12049/2620
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv 62
Acta Palaeontologica Polonica
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/4.0/
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:RID-UNRN (UNRN)
instname:Universidad Nacional de Río Negro
reponame_str RID-UNRN (UNRN)
collection RID-UNRN (UNRN)
instname_str Universidad Nacional de Río Negro
repository.name.fl_str_mv RID-UNRN (UNRN) - Universidad Nacional de Río Negro
repository.mail.fl_str_mv rid@unrn.edu.ar
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score 12.559606

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