Botucatu Formation

Botucatu Formation
Stratigraphic range: Aptian
TypeGeological formation
Unit ofSão Bento Group
UnderliesSerra Geral Formation
OverliesRio do Rasto Formation
Lithology
PrimarySandstone
Location
Coordinates29°42′S 52°24′W / 29.7°S 52.4°W / -29.7; -52.4
Approximate paleocoordinates30°36′S 19°30′W / 30.6°S 19.5°W / -30.6; -19.5
RegionRio Grande do Sul
Country Brazil
 Uruguay
ExtentParaná & Pelotas Basins
Type section
Named forBotucatu

Geologic map of the Paraná Basin with the Paleozoic and Mesozoic units in light blue

The Botucatu Formation is an Aptian geologic formation of the Paraná and Pelotas Basins in southern Brazil and northern Uruguay. The formation is composed of quartzitic sandstones, deposited in an eolian environment.[1] Fossil theropod tracks have been reported from the formation.[2]

Description

The sandstone is fine-textured and well sorted, containing no pebbles; its colour is occasionally white, yellowish, and reddish, but more commonly it is pinkish. Nearly always it is silicified and therefore compact and hard.[3] The formation was deposited in an arid desert environment, characterized by sabkhas and wadis.[4]

Fossil content

Among the following fossils were reported from the Botucatu Formation:[3]

Ichnofossils

See also

References

  1. ^ Petrolli & Pimentel, 2014, p.1
  2. ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
  3. ^ a b São Bento quarry, Araraquara at Fossilworks.org
  4. ^ a b Leonardi, 1994, p.50
  5. ^ Langer, Max Cardoso; de Oliveira Martins, Neurides; Manzig, Paulo César; de Souza Ferreira, Gabriel; de Almeida Marsola, Júlio César; Fortes, Edison; Lima, Rosana; Sant’ana, Lucas Cesar Frediani; da Silva Vidal, Luciano; da Silva Lorençato, Rosangela Honório; Ezcurra, Martín Daniel Ezcurra (2019). "A new desert-dwelling dinosaur (Theropoda, Noasaurinae) from the Cretaceous of south Brazil". Scientific Reports. 9 (1): 9379. Bibcode:2019NatSR...9.9379L. doi:10.1038/s41598-019-45306-9. PMC 6594977. PMID 31243312.
  6. ^ Leonardi, Giuseppe; Fernandes, Marcelo Adorna; Carvalho, Ismar de Souza; Schutzer, Julia Beatrice; Silva, Rafael Costa da (2023-09-30). "Farlowichnus rapidus new ichnogen., new ichnosp.: A speedy and small theropod in the Early Cretaceous Botucatu paleodesert (Paraná Basin), Brazil". Cretaceous Research. 153: 105720. doi:10.1016/j.cretres.2023.105720. ISSN 0195-6671.
  7. ^ Buck, Pedro Victor; Ghilardi, Aline Marcele; de C.P. e M. Peixoto, Bernardo; Aureliano, Tito; Fernandes, Marcelo Adorna (1 June 2022). "Lacertoid tracks from the Botucatu Formation (Lower Cretaceous) with different locomotor behaviors: A new trackmaker with novel paleoecological implications". Journal of South American Earth Sciences. 116: 103825. doi:10.1016/j.jsames.2022.103825. ISSN 0895-9811. Retrieved 9 December 2024 – via Elsevier Science Direct.

Bibliography

Further reading

  • Leonardi, G. 1989. Inventory and statistics of the South American dinosaurian ichnofauna and its paleobiological interpretation. In D. D. Gillette & M. G. Lockley (ed.), Dinosaur Tracks and Traces 165–178.
  • Leonardi, G. 1980. On the discovery of an abundant ichno-fauna (vertebrates and invertebrates) in the Botucatu Formation s.s. in Araraquara, São Paulo, Brazil. Anais da Academia Brasileira de Ciências 52(3):559-567 link.
  • Leonardi, G., Carvalho, I.S., and Fernandes, M.A. 2007. The desert ichnofauna from Botucatu Formation (Upper Jurassic–Lower Cretaceous), Brazil. In: Carvalho, I.S., Cassab, R.C.T., Schwanke, C., Carvalho, M.A., Fernandes, A.C.S., Rodrigues, M.A.C., Carvalho, M.S.S., Arai, M., and Oliveira, M.E.Q. (eds.). Paleontologia: Cenários da Vida, I. Interciência, Rio de Janeiro, Brazil. p, 372–383. link.