Postcranial anatomy of Prestosuchus chiniquensis (Archosauria: Loricata) from the Triassic of Brazil
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Published:2024-02
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ISSN:1932-8486
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Container-title:The Anatomical Record
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language:en
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Short-container-title:The Anatomical Record
Author:
Mastrantonio Bianca Martins1ORCID,
Lacerda Marcel Baêta2ORCID,
de Farias Brodsky Dantas Macedo1ORCID,
Pretto Flávio Augusto3ORCID,
Rezende Letícia de Oliveira3ORCID,
Desojo Julia Brenda4ORCID,
Schultz Cesar Leandro1ORCID
Affiliation:
1. Programa de Pós‐Graduação em Geociências Instituto de Geociências, Universidade Federal do Rio Grande do Sul Porto Alegre Rio Grande do Sul Brazil
2. Programa de Pós‐Graduação em Zoologia Museu Nacional, Universidade Federal do Rio de Janeiro Rio de Janeiro Brazil
3. Centro de Apoio à Pesquisa Paleontológica da Quarta Colônia (CAPPA), Programa de Pós‐Graduação em Biodiversidade Animal (PPGBA), Universidade Federal de Santa Maria (UFSM) São João do Polêsine Brazil
4. CONICET—Division Paleontologia Vertebrados, Facultad de Ciencias Naturales y Museo Universidad Nacional de La Plata La Plata Argentina
Abstract
AbstractPrestosuchus chiniquensis is the best represented pseudosuchian archosaur from the Pinheiros‐Chiniquá Sequence, Middle‐Late Triassic (Ladinian/Carnian) of the Santa Maria Supersequence, Southern Brazil. Several incomplete specimens attributed to this species have been described, but the morphology of the postcranial skeleton of P. chiniquensis is poorly known. In this contribution we present the postcranial material of the UFRGS‐PV‐0629‐T specimen, concluding its description, as its skull and endocast have already been described. Additionally, histological data provided new information on the poorly known ontogenetic series of P. chiniquensis, and on its growth patterns suggesting a longer period of slow growth when compared to other basal Loricata species. A phylogenetic analysis placed UFRGS‐PV‐0629‐T in a group composed by the lectotype, paralectotype, and other described P. chiniquensis specimens, further corroborating our taxonomic hypothesis, that specimens of basal Loricata collected in Brazil are closely related to each other. Due to the association of characters found in the phylogenetic analysis, the specimen UFRGS‐PV‐0629‐T is attributed as the most complete material ever found for P. chiniquensis. As such, it is clear that the material presented here provides important new information on P. chiniquensis. Based on the results presented here, we revised the diagnosis for P. chiniquensis. However, it also evidences the need for new discoveries and studies of other specimens seeking to understand this and other closely related species, which were important components of worldwide trophic webs of the Triassic biotas.
Funder
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
Agencia Nacional de Promoción Científica y Tecnológica
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul
Subject
Ecology, Evolution, Behavior and Systematics,Histology,Biotechnology,Anatomy
Reference67 articles.
1. La structure du tissu osseux envisagée comme expression de différences dans la vitesse de l'accroissement;Amprino R.;Archives de Biologie,1947
2. A huge thecodont skull from the Triassic of Brazil;Barberena M. C.;Pesquisas,1978
3. Descripción de Fasolasuchus tenax y su significado en la sistemática y evolución de los Thecodontia;Bonaparte J. F.;Revista del Museo de Ciencias Naturales Bernardino Rivadavia,1981