Skip to main content
. 2024 Apr 3;19(4):e0298242. doi: 10.1371/journal.pone.0298242

Fig 2. The late triassic ischigualasto formation, northwestern Argentina.

Fig 2

A, Location and geological map of the Ischigualasto-Villa Unión Basin. B, Primary outcrop of the Ischigualasto Basin, including Ischigualasto Provincial Park, Cerro Bola, and Cerro Rajado. Landsat imagery courtesy of NASA Goddard Space Flight Center and U. S. Geological Survey. C, General stratigraphic section of the Ischigualasto Formation showing the stratigraphic positions of radiometric ages and the Hyperodapedon-Exaeretodon-Herrerasaurus (HEH), Exaeretodon (E), and Jachaleria (J) biozones. All the sampled vertebrates come from within the HEH biozone, deposited between 230.8 and 228.9 Ma. All but Eodromaeus come from the Cancha de Bochas Member. The stratigraphic position of Eodromaeus is indicated by the red star, at the base of the Valle de la Luna Member, and within the HEH biozone.