Bauru Group
Bauru Group Stratigraphic range: Late Cretaceous (Coniacian-Maastrichtian) ~ | |
---|---|
Type | Group |
Unit of | Bauru Sub-basin |
Sub-units | , Adamantina, Uberaba, Marília, , , & Presidente Prudente Formations |
Underlies | Alluvium |
Overlies | |
Lithology | |
Primary | Sandstone |
Other | Conglomerate, siltstone, mudstone, coal |
Location | |
Coordinates | 19°42′S 48°00′W / 19.7°S 48.0°WCoordinates: 19°42′S 48°00′W / 19.7°S 48.0°W |
Approximate paleocoordinates | 24°24′S 29°12′W / 24.4°S 29.2°W |
Region | Minas Gerais, São Paulo, General Salgado, , Mato Grosso |
Country | Brazil |
Extent | Paraná Basin |
Type section | |
Named for | Bauru |
Bauru Group (Brazil) |
The Bauru Group is a geological group of the Bauru Sub-basin, Paraná Basin in Minas Gerais, São Paulo, General Salgado, Itapecuru-Mirim, Mato Grosso, Brazil whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.[1]
Subdivisions[]
According to a 2016 study:[2]
The Bauru Basin covers an area of approximately 379.362 km2 located almost exclusively in Brazil.., with selected outcrops in Northeastern Paraguay (Fúlfaro, 1996). This Cretaceous sedimentary succession reflects changing nonmarine environments, such as eolian, lacustrine, fluvial and alluvial fans.
The Bauru Group was divided by Fernandes and Coimbra (1996) in four formations, namely Adamantina, Uberaba, and Marília.[3] In 1998, Fernandes revised the group and recognize six formations, Uberaba, , , , Presidente Prudente and Marília.[4] The Adamantina Formation was divided in , and Presidente Prudente Formations.[4]
Vertebrate paleofauna[]
Molluscan paleofauna[]
Gastropoda[]
- †Physa aridi Mezzalira, 1974[5]
- †Physa mezzalirai Ghilardi, Carbonaro & Simone, 2011[6]
- † Mezzalira, 1974[5]
Bivalvia[]
- † Mezzalira, 1974[5]
- † Mezzalira, 1974[5]
- † Mezzalira, 1974[5]
- † Mezzalira, 1974[5]
- † (Ihering, 1913)[5]
- † Mezzalira, 1974[5]
- † Mezzalira, 1974[5]
- † (Mezzalira, 1974)[5]
See also[]
- List of dinosaur-bearing rock formations
- Areado Group of the São Francisco Basin
- Santana Group of the Araripe Basin
References[]
- ^ Weishampel, David B. (2004). "Dinosaur distribution (Late Cretaceous, South America)". In Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (eds.). The Dinosauria (2nd ed.). University of California Press. pp. 600–604. ISBN 0-520-24209-2.
- ^ Costa Menegazzoa, Mirian; Catuneanu, Octavian; Chang, Hung Kiang (2016). "The South American retroarc foreland system: The development of the Bauru Basin in the back-bulge province". Marine and Petroleum Geology. 73: 131–156. Retrieved November 28, 2021.
The fossil record indicates that sediment accumulated from the Cenomanian to early Paleocene, beginning after the Mochica Phase of the Andean orogeny.
- ^ Fernandes, L.A.; Coimbra, A.M.A (1996). "Bacia Bauru (Cretáceo Superior, Brasil)". Anais da Academia Brasileira de Ciências. 68 (2): 195–205.
- ^ a b Fernandes, L.A. & Coimbra, A.M. (2000a). "Revisão estratigráfica da parte oriental da Bacia Bauru (Neocretáceo)". Revista Brasileira de Geociências. 30 (4): 717–728. doi:10.25249/0375-7536.2000304717728.
- ^ a b c d e f g h i j Simone, L.R.L. & Mezzalira, S. 1994. Fossil Molluscs of Brazil. Boletim do Instituto Geológico 11: 1–202.
- ^ Ghilardi,RP; Carbonaro, FA; & Simone, LRL. 2011. Physa mezzalirai, a new cretaceous basommatophoran from Adamantina formation, Brazil. Strombus 18(1-2): 1-14. "Archived copy". Archived from the original on 2012-10-26. Retrieved 2012-07-17.
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- Geologic groups of South America
- Geologic formations of Brazil
- Upper Cretaceous Series of South America
- Cretaceous Brazil
- Coniacian Stage
- Santonian Stage
- Campanian Stage
- Maastrichtian Stage of South America
- Fossiliferous stratigraphic units of South America
- Paleontology in Brazil
- Paraná Basin