Where: Mendoza, Argentina (33.8° S, 68.5° W: paleocoordinates 34.0° S, 67.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Tunuyán Formation, Messinian to Messinian (7.2 - 3.6 Ma)

• Tunuyán Formation: Montehermosan-Chapadmalalan (SALMA, South America Land Mammal Age)

•

•Marshall et al., 1986: The boundary between the Huayquerias Formation (namesake and type formation and fauna of the Huayquerian Land Mammal Age) and the Tunuyan Formation (which contains a Montehermosan age fauna at this locality) is thus about 5.8 Ma. At the locality of Rio Seco de la Salada on the west side of the Meseta Guadal, glass concentrates from two tuffs in the upper part of the Tunuyan Formation yielded ages of 2.6 ? 0.1 and 2.4 + 0.3 Ma, respectively (the latter date is from a tuff located 90 m stratigraphically above the former). These dates indicate that the rocks and faunas from the upper part of the Tunuyan Formation are of Chapadmalalan (i.e., 2.8 to 2.5 Ma) and Uquian (i.e., 2.5 to 1.5 Ma) age. The faunas from the lower and middle parts of the Tunuyan Formation on the east side of the Meseta Guadal are apparently all of Montehermosan age (i.e., ca. 6.0 to 2.8.

• bed-level stratigraphic resolution

Environment/lithology: fluvial; lithified, sandy sandstone

Size class: macrofossils

Collected in 2013-2016

Primary reference: G. F. Turazzini and R. O. Gómez. 2023. A new old Budgett frog: an articulated skeleton of an Early Pliocene Lepidobatrachus (Anura, Ceratophryidae) from western Argentina. In G. Bever (ed.), Journal of Vertebrate Paleontology [P. Mannion/L. Barcelos]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 200118: authorized by Susana Devincenzi, entered by Susana Devincenzi on 15.03.2019, edited by Lucas Barcelos and Philip Mannion

Creative Commons license: CC BY (attribution)