Linked from
The 9 pages that link to Ischigualasto Formation, each with the reason it gives.
SaurischiaRelated: Its fossils preserve several early dinosaurs relevant to saurischian origins.
RhynchosauriaRelated: Its fauna includes rhynchosaurs alongside early dinosaurs and other reptiles.
AetosauriaRelated: Its assemblages document aetosaur presence in South American ecosystems.
LagerpetidaeRelated: Fossils from this formation include early lagerpetid material.