The Coli Toro Member is a Campanian geologic member in Argentina.

Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.

[1] The sandstones of the formation were deposited in a lacustrine environment.

The formation in later publications has been reassigned as the Coli Toro Member at the basal levels of the Los Alamitos Formation, containing fossil remains of Sulcusuchus erraini.

[2] The formation partly overlies the Angostura Colorada Formation.