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dc.contributor.author
Paes Neto, Voltaire  
dc.contributor.author
Desojo, Julia Brenda  
dc.contributor.author
Biacchi Brust, Ana Carolina  
dc.contributor.author
Schultz, Cesar  
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Da Rosa, Atila Augusto Stock  
dc.contributor.author
Soares, Marina  
dc.date.available
2022-01-18T17:48:39Z  
dc.date.issued
2021-11  
dc.identifier.citation
Paes Neto, Voltaire; Desojo, Julia Brenda; Biacchi Brust, Ana Carolina; Schultz, Cesar; Da Rosa, Atila Augusto Stock; et al.; Intraspecific variation in the axial skeleton of Aetosauroides scagliai (Archosauria: Aetosauria) and its implications for the aetosaur diversity of the Late Triassic of Brazil; Academia Brasileira de Ciencias; Anais da Academia Brasileira de Ciencias; 93; 2; 11-2021; 1-36  
dc.identifier.issn
0001-3765  
dc.identifier.uri
http://hdl.handle.net/11336/150258  
dc.description.abstract
Aetosauria represents a remarkable clade of armored pseudosuchians in which some of its oldest members are recovered from late Carnian units of Brazil. Three species are known: The mid-sized aetosaur Aetosauroides scagliai, which also occurs in Argentina, and two small-sized species, Aetobarbakinoides brasiliensis and Polesinesuchus aurelioi. We provide a detailed description and comparative analysis of the axial skeleton of Aetosauroides, identifying some diagnostic features as variable. These include the deep pocket pit lateral to the base of the neural spine, the presence of the infradiapophyseal laminae and the lateral fossa ventral to the neurocentral suture. These features are not found in smaller and immature Aetosauroides specimens, resembling the condition found in Polesinesuchus, which is based solely on a juvenile individual, as revealed by osteoderm microstructure analysis. As Polesinesuchus cannot be anatomically differentiated from other small individuals of Aetosauroides, we propose it as a junior synonym of Aetosauroides scagliai. Our results shrink the number of putative ‘dwarf’ aetosaurs, indicating that morphological variation related to ontogeny affects aetosaur taxonomy and phylogeny.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Academia Brasileira de Ciencias  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/  
dc.subject
GROWTH SERIES  
dc.subject
JUVENILE  
dc.subject
ONTOGENY  
dc.subject
OSTEOHISTOLOGY  
dc.subject
PSEUDOSUCHIA  
dc.subject.classification
Paleontología  
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Ciencias de la Tierra y relacionadas con el Medio Ambiente  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Intraspecific variation in the axial skeleton of Aetosauroides scagliai (Archosauria: Aetosauria) and its implications for the aetosaur diversity of the Late Triassic of Brazil  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2022-01-06T14:51:29Z  
dc.identifier.eissn
1678-2690  
dc.journal.volume
93  
dc.journal.number
2  
dc.journal.pagination
1-36  
dc.journal.pais
Brasil  
dc.journal.ciudad
Rio de Janeiro  
dc.description.fil
Fil: Paes Neto, Voltaire. Universidade Federal do Rio Grande do Sul; Brasil  
dc.description.fil
Fil: Desojo, Julia Brenda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina  
dc.description.fil
Fil: Biacchi Brust, Ana Carolina. Universidade Federal do Rio Grande do Sul; Brasil  
dc.description.fil
Fil: Schultz, Cesar. Universidade Federal do Rio Grande do Sul; Brasil  
dc.description.fil
Fil: Da Rosa, Atila Augusto Stock. Universidade Federal de Santa Maria; Brasil  
dc.description.fil
Fil: Soares, Marina. Universidade Federal do Rio de Janeiro; Brasil  
dc.journal.title
Anais da Academia Brasileira de Ciencias  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1590/0001-3765202120201239  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.scielo.br/j/aabc/a/5gjfMGTnHmpHwnWzCYddCbB/?lang=en