Rock formation · San Juan Province
Ischigualasto Formation
Late Triassic (Carnian) river floodplain deposits of north-west Argentina, bracketed by 40Ar/39Ar ages; one of the oldest dinosaur-bearing units.
A formation is a body of rock laid down in one setting over a stretch of time. 1 dinosaur in DinoDex is known from fossils found in it.
