Rincão dos Weiss: Induan - Olenekian, Brazil
collected by Fundação Zoobotânica do Rio Grande do Sul 1997
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Procolophonidae
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Procolophon sp.
Owen 1876
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Dias-da-Silva et al. 2006 | 4 specimens | ||||||||
| UFRGS PV 9252 T, 0494 T, 0498 T; MCT/PUCRS 3790; one partial skull and 3 vertebrae of large individuals, not found associated | ||||||||||
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Procolophon brasiliensis n. sp.
Cisneros and Schultz 2002
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1 individual | |||||||||
| synonym of Procolophon trigoniceps | ||||||||||
| MCN PV 1905 (type) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Brazil | State/province: | Rio Grande do Sul | County: | Mata |
| Coordinates: | 29.6° South, 54.4° West (view map) | ||||
| Paleocoordinates: | 49.1° South, 23.7° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Stratigraphy
| Geological group: | Rosário do Sul | Formation: | Sanga do Cabral | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: The Sanga do Cabral Fm. is correlated with the "impoverished zone" (Procolophon subzone) of the Lystrosaurus Assemblage Zone of the Main Karoo Basin of South Africa by some authors on the basis of the abundant records of Procolophon, i.e., it is Upper Induan to Lower Olenekian in age (see Dias-da-Silva et al., 2006, Can. J. Earth Sci. and references therein). However, Langer et al. (2007; New Mexico Mus. Nat. Hist. Sci. Bull. 41) pointed out that the prevalence of Procolophon in the Brazilian sequence might represent a taphonomic bias, and that only an undifferentiated Lower Triassic age is currently possible.
The Sanga do Cabral Fm. belongs to the Rosario do Sul Group according to various authors (e.g., Langer et al. 2007, New Mexico Mus. Nat. Hist. Sci. Bull. 41). | |||||
Lithology and environment
| Primary lithology: | massive,"cross stratification" conglomerate | ||
| Secondary lithology: | tabular sandstone | ||
| Includes fossils? | Y | ||
| Lithology description: "It [the Sanga do Cabral Fm.] consists of massive to trough cross-bedded intraformational conglomerates and horizontally bedded sandstones, which are interpreted as being deposited by braided river systems which poorly confined channels that developed on a low-gradient alluvial plain. [...] The intraformational conglomerates are the bone-bearing beds, [...]." (Dias-da-Silva et al., 2006). | |||
| Environment: | fluvial indet. | Tectonic setting: | cratonic basin |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Fragmentation: | frequent |
| Temporal resolution: | snapshot |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | mechanical,survey of museum collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | Fundação Zoobotânica do Rio Grande do Sul | Collection dates: | 1997 |
| Collection method comments: MCN PV = vertebrate paleontology collections of the Museu de Ciências Naturais, Fundação Zoobotânica do Rio Grande do Sul, Porto Alegre
UFRGS PV = vertebrate paleontology collections of the Universidade Federal do Rio Grande do Sul, Porto Alegre MCT/PUCRS = Museu de Ciência e Technologia da Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre | |||
Metadata
| Also known as: | Rincao dos Weiss; holotype site of Procolophon brasiliensis | ||
| Database number: | 93720 | ||
| Authorizer: | J. Mueller | Enterer: | T. Liebrecht |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2010-01-29 04:08:53 | Last modified: | 2021-03-26 13:26:28 |
| Access level: | the public | Released: | 2010-01-29 04:08:53 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 31834. | J. C. Cisneros and C. L. Schultz. 2002. Procolophon brasiliensis n. sp., a new procolophonid reptile from the Lower Triassic of southern Brazil. Neues Jahrbuch für Geologie und Paläontologie Monatshefte 2002(11):641-648 [J. Mueller/T. Liebrecht] |
Secondary references:
| 31842 | S. Dias-da-Silva, S. Modesto, and C. L. Schultz. 2006. New Material of Procolophon (Parareptilia: Procolophonoidea) from the Lower Triassic of Brazil, with remarks on the ages of the Sanga do Cabral and Buena Vista formations of South America. Canadian Journal of Earth Sciences 43(11):1685-1693 [J. Mueller/T. Liebrecht] |