Data/hora: 09/06/2024 05:53:15

Provedor de dados: | 42
País: | Brazil
Título: | A dinosaur ilium from the Late Triassic of Brazil with comments on key-character supporting Saturnaliinae
Autores: | GARCIA,MAURÍCIO S.; PRETTO,FLÁVIO A.; DIAS-DA-SILVA,SÉRGIO; MÜLLER,RODRIGO T.
Data: | 2019-01-01
Ano: | 2019
Palavras-chave: | Intraspecific variation; Saurischia; Sauropodomorpha; Upper Triassic; Western Gondwana.
Resumo: | Abstract: Discoveries in Carnian-aged rocks are establishing a rich and diverse dinosaurian fauna at the so-called ‘dawn of the age of dinosaurs’ in the Late Triassic of Western Gondwana. Accordingly, Brazilian strata from the Candelária Sequence have contributed extensively to this trend. Here, we present a new dinosaurian specimen (CAPPA/UFSM 0200) from this geological unit. The material was collected at a fossiliferous site that had no previous record of dinosaurs. Our specimen comprises a single ilium, which we describe in detail. Its anatomy is consistent with Carnian sauropodomorph dinosaurs, but differs from coeval specimens by several features, although we do not discard the possibility of these features being the result of intraspecific variation. In part of our phylogenetic investigation, CAPPA/UFSM 0200 was recovered within Saturnaliinae, a group comprised of Carnian sauropodomorphs from South America. However, based on examination of better-sampled coeval taxa, a character (a strong rugosity in the ilium) supporting this less inclusive position might be related to intraspecific variation and so, should be carefully considered. This study increases the distribution of dinosaur remains in fossiliferous units from southern Brazil and adds to the discussion regarding intraspecific variation and its implications in the phylogeny of early dinosaurs.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000400516
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/0001-3765201920180614
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.91 suppl.2 2019
Fonte: | info:eu-repo/semantics/openAccess