The Los Colorados Formation is a sedimentary rock formation of the Ischigualasto-Villa Unión Basin, found in the provinces of San Juan and La Rioja in Argentina. The formation dates back to the Norian age of the Late Triassic.
Los Colorados massif, La Rioja Province, Argentina
Image: Jachaleria candelariensis 2
Image: Protosuchus BW
Image: Pseudhesperosuchus
The Norian is a division of the Triassic Period. It has the rank of an age (geochronology) or stage (chronostratigraphy). It lasted from ~227 to 208.5 million years ago. It was preceded by the Carnian and succeeded by the Rhaetian.
Cast of a tridactyl footprint of a theropod dinosaur from the Norian of the Czech Republic.