Where: La Rioja, Argentina (29.8° S, 67.8° W: paleocoordinates 49.9° S, 37.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Chañares Formation (Agua de la Peña Group), Ladinian (242.0 - 237.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collection methods: PVL: Fundacion Miguel Lillo, Universidad Nacional de Tucuman

Primary reference: P. C. Sereno and A. B. Arcucci. 1994. Dinosaurian precursors from the Middle Triassic of Argentina: Marasuchus lilloensis, gen. nov. Journal of Vertebrate Paleontology 14(1):53-73 [J. Alroy/R. Whatley/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13003: authorized by John Alroy, entered by Robin Whatley on 15.01.2002, edited by Richard Butler and Bethany Allen

Creative Commons license: CC BY (attribution)