Where: Chubut, Argentina (42.9° S, 67.5° W: paleocoordinates 43.5° S, 61.7° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Sarmiento Formation, Colhuehuapian (21.0 - 17.5 Ma)

• Cheme-Arriaga et al. 2016: Sarmiento Formation represents one of the most expressive units in terms of geologic events and fossil remains from the Paleogene of extra-Andean Patagonia.Sarmiento Formation crop out (Ardolino and Franchi, 1996; Lema et al., 2001). In Bajada del Diablo, southwest from the Telsen locality, the Somun Cura and Sar- miento formations interleave (Ardolino and Franchi, 1996). Tuffs of the Sarmiento Formation under- and overlie basalt mantles from the Somun Cura Formation. One basalt sample from this site gave an isotopic age of 27 Ma. They are also covered in the same locality by a basalt mantle, named Basalto La Mesada, with an age of about 17 to 16 Ma. The specimen here studied (MPEF-PV 2576) derives from a zone of white tuffs and fine sandstones, slightly stratified, belong- ing to the upper part of the Sarmiento Formation (Colhuehuapian SALMA, early Miocene), located a few meters above the basalt mantle corresponding to the Somun Cura Formation.

• bed-level stratigraphic resolution

Environment/lithology: wet floodplain; lithified, fine-grained sandstone and lithified, white tuff

Size class: macrofossils

Collected by Cheme-Arriaga et al. 2016

• MPEF-PV 2576 is currently stored in Museo Paleontologico ‘Egidio Feruglio’, Trelew, Chubut, Argentina.

Primary reference: L. Cheme-Arriaga, M. T. Dozo, and J. N. Gelfo. 2016. A new Cramaucheniinae (Litopterna, Macraucheniidae) from the early Miocene of Patagonia, Argentina. Journal of Vertebrate Paleontology 36(3):e1229672 [P. Mannion/G. Varnham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 201746: authorized by Philip Mannion, entered by Grace Varnham on 25.05.2019

Creative Commons license: CC BY (attribution)