Where: La Pampa, Argentina (37.7° S, 63.5° W: paleocoordinates 37.9° S, 61.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Cerro Azul Formation, Messinian (7.2 - 5.3 Ma)

• Schmidt et al. 2018: Figure 2 illustrates the stratigraphic distribution of the locality giving a general age estimate of 5.4-6.1Ma

•

•Prevosti et al. 2023: Biochronological methods were useful in ordering and estimating the age of the different faunas of the Cerro Azul Formation, ranging from ca. 8 to ca. 5.7 Ma. Some appear to be transitional between Chasicoan and “Huayquerian” faunas (Cerro La Bota, Cerro Patagua, and Algarrobo del Águila), and other three (Barrancas Coloradas, El Guanaco, and Caleufú) cover the latest Miocene, even some of them could have reached the earliest Pliocene.

• formation-level stratigraphic resolution

Environment/lithology: loess; lithified, brown siltstone

Size class: macrofossils

Reposited in the MLP

Primary reference: F. J. Goin and C. Montalvo. 1988. Revisión sistemática y reconocimiento de una nueva especie del género Thylatheridium Reig (Marsupialia, Didelphidae). Ameghiniana 25(2):161-167 [C. Jaramillo/J. Carrillo]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 140932: authorized by Carlos Jaramillo, entered by Juan Carrillo on 19.03.2013, edited by Kateryn Pino, Grace Varnham and Miranta Kouvari

Creative Commons license: CC BY (attribution)