Areado Group

The Areado Group is a Late Jurassic to Early Cretaceous (Tithonian to Albian; covering approximately 50 million years)[1] geologic group in southeastern Brazil. The group was defined by Cardoso in 1968.[2]

Areado Group Stratigraphic range: Tithonian-Albian ~150–100 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Group
Sub-units	Três Barras, Quiricó & Abaeté Formations
Underlies	Mata da Corda Group
Overlies	Bambuí Group
Lithology
Primary	Sandstone, claystone, conglomerate
Location
Coordinates	18.2°S 45.7°W
Approximate paleocoordinates	17.1°S 12.1°W
Region	Minas Gerais
Country	Brazil
Extent	São Francisco Basin
Type section
Named by	Cardoso
Year defined	1968
Areado Group (Brazil)

Various fossil theropod tracks have been reported from the aeolic sandstones of the group.[3][4]

Stratigraphy

The group contains the following formations from young to old:[5]

• Albian Três Barras Formation - eolian and fluvio-deltaic sandstones
• Aptian Quiricó Formation - lacustrine claystones
• Tithonian-Barremian Abaeté Formation - fluvial conglomerates

See also

• List of dinosaur-bearing rock formations
  • List of stratigraphic units with theropod tracks

References

1. Carvalho & Kattah, 1998, p.56
2. Carvalho & Kattah, 1998, p.54
3. Carvalho & Kattah, 1998, pp.57-61
4. Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
5. Cristóvão Baptista, 2004, p.19

Bibliography

• Cristóvão Baptista, Marcos. 2004. Estratigrafia e evolução geológica da região de Lagoa Formosa (MG) (MSc. thesis), 1–116. Universidade Federal de Minas Gerais. Accessed 2018-09-08.
• Weishampel, David B.; Peter Dodson, and Halszka Osmólska (eds.). 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21. ISBN 0-520-24209-2
• Carvalho, I. d. S., and S. d. S. Kattah. 1998. Dinosaur footprints from Sanfranciscana Basin, Minas Gerais State, Brazil. Anais da Academia Brasileira de Ciências 70. 53-67. Accessed 2020-06-28.