2 km north of Agua de la Pena (Triassic of Argentina)

Where: San Juan, Argentina (30.0° S, 68.0° W: paleocoordinates 46.6° S, 33.5° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Scaphonyx-Exaeretodon-Herrerasaurus other zone, Cancha de Bochas Member (Ischigualasto Formation), Carnian (237.0 - 228.0 Ma)

• ~100 m above the base of the formation according to Cox (1965). This would place the locality within the "Scaphonyx-Exaeretodon-Herrerasaurus biozone" of Martinez et al. (2011: Science 331: 206) which reportedly represents "a narrow temporal interval from 231.5 to 229 Ma in the latter half of the Carnian stage".

•5 specimens from "about" the same horizon (Cox 1965).

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Reposited in the MCZ

• MACN: Museo Argentino de Ciencias Naturales

Primary reference: C. B. Cox. 1965. New Triassic dicynodonts from South America, their origins and relationships. Philosophical Transactions of the Royal Society of London, Series B 248(753):457-516 [J. Alroy/R. Whatley/R. Whatley]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 34702: authorized by John Alroy, entered by Robin Whatley on 16.09.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Osteichthyes
 Therapsida - Stahleckeriidae
Ischigualastia jenseni n. gen. n. sp.
Ischigualastia jenseni n. gen. n. sp. Cox 1962 dicynodont
MACN 18.055 (holotype), skull and partial skeleton. MCZ 3118-3121