Areado Group

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

Various fossil theropod tracks have been reported from the aeolic sandstones of the group.

Stratigraphy
The group contains the following formations from young to old:
 * Albian Três Barras Formation - eolian and fluvio-deltaic sandstones
 * Aptian Quiricó Formation - lacustrine claystones
 * Tithonian-Barremian Abaeté Formation - fluvial conglomerates