Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Dinosaur remains from the `Botucarai Hill' (Caturrita Formation), Late Triassic of south Brazil, and their stratigraphic context

Full text
Bittencourt, Jonathas Souza [1, 2] ; Stock da Rosa, Atila Augusto [3] ; Schultz, Cesar Leandro [4] ; Langer, Max Cardoso [1]
Total Authors: 4
[1] Univ Sao Paulo, Dept Biol, BR-1404901 Ribeirao Preto, SP - Brazil
[2] Univ Fed Minas Gerais, Dept Geol, BR-31270901 Belo Horizonte, MG - Brazil
[3] Univ Fed Santa Maria, Dept Geociencias, BR-97105900 Santa Maria, RS - Brazil
[4] Univ Fed Rio Grande do Sul, Inst Geociencias, BR-91501970 Porto Alegre, RS - Brazil
Total Affiliations: 4
Document type: Journal article
Source: HISTORICAL BIOLOGY; v. 25, n. 1, p. 81-93, 2013.
Web of Science Citations: 6

Vertebrate fossils recovered from sites nearby the Botucarai Hill and Candelaria (Caturrita Formation) depict a diverse Late Triassic tetrapod fauna from south Brazil. These records are of key importance to the biostratigraphy of the upper sections of the Rosario do Sul Group. A lithological and biostratigraphic survey on the main fossil localities of the Botucarai Hill area confirms the occurrence of the lower Hyperodapedon and the upper Riograndia Assemblage Zones in the region, the latter yielding early saurischians. In this paper, three incomplete dinosaur specimens, an isolated sacral vertebra, an articulated left pubisischium and an isolated right ischium, from the Botucarai Hill site are described. A comparative survey suggests that these specimens have sauropodomorph affinities, but probably more primitive than typical prosauropods from the Norian-Early Jurassic. Regardless of the phylogenetic position of Guaibasaurus as theropod or sauropodomorph, their occurrence in the Caturrita Formation, which also yielded core prosauropods from the Santa Maria region, suggests either the survival of early members of the clade with more derived prosauropods or that heterochronous faunas are sampled from that stratigraphic unit. (AU)

FAPESP's process: 10/08891-3 - Anatomy and systematics of the dinosauromorphs from the Ladinian of the Chañares Formation, Argentina, and the origin of dinosaurs
Grantee:Jonathas de Souza Bittencourt Rodrigues
Support type: Scholarships in Brazil - Post-Doctorate