Ischigualasto Formation

Late Triassic (Carnian) river floodplain deposits of north-west Argentina, bracketed by 40Ar/39Ar ages; one of the oldest dinosaur-bearing units.

地层是在同一环境中、经过一段时间沉积形成的岩体。 DinoDex 中有 1 种恐龙的化石出自这里。

更多来自San Juan Province的恐龙