Biostratigraphic significance of a new early sauropodomorph specimen from the Upper Triassic of southern Brazil
| Autor: | Sérgio Dias-da-Silva, Rodrigo Temp Müller, Max C. Langer |
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| Rok vydání: | 2016 |
| Předmět: |
010506 paleontology
Jachaleria biology Unaysaurus SAURISCHIA Saurischia Dicynodont 010502 geochemistry & geophysics biology.organism_classification 01 natural sciences Paleontology General Agricultural and Biological Sciences Caturrita Formation Geology 0105 earth and related environmental sciences Plateosauria |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 1029-2381 0891-2963 |
| DOI: | 10.1080/08912963.2016.1144749 |
| Popis: | The Wachholz site (Caturrita Formation, Late Triassic), in Agudo, Rio Grande do Sul (RS), southern Brazil, has yielded several sauropodomorphs. This includes CAPPA/UFSM 0002, described here based on associated elements from the basalmost portion of the site. The specimen possesses a set of traits shared with typical ‘prosauropods’: a concave caudal margin of the trunk neural spines and a broadly convex proximal end of metacarpal V. However, it also retains some plesiomorphic features, for instance, the slender pedal digit I. Some bones closely resemble those of Unaysaurus tolentinoi, the other definitive sauropodomorph from the Caturrita Formation, an affinity corroborated by a new phylogenetic analysis. An updated biostratigraphic framework correlates the Wachholz, Agua Negra (Sao Martinho da Serra/RS) and Botucarai Hill (Candelaria/RS) sites based on their sample of sauropodomorphs. In addition, the record of Jachaleria in the Botucarai Hill site, a dicynodont also known from early Norian deposi... |
| Databáze: | OpenAIRE |
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