Where: Río Negro, Argentina (38.8° S, 68.1° W: paleocoordinates 41.5° S, 53.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Allen Formation (Malargüe Group), Late/Upper Campanian to Late/Upper Campanian (83.5 - 65.5 Ma)

• lower member of formation

• bed-level stratigraphic resolution

Environment/lithology: fluvial; medium-grained, coarse, yellow sandstone

Size class: macrofossils

Collected by S. Roth, Schiller, R. Wichmann in 1921-1923; reposited in the MLP

Collection methods: quarrying, surface (float), surface (in situ), mechanical,

Primary reference: J. F. Bonaparte. 1996. Cretaceous tetrapods of Argentina. Münchner Geowissenschaften Abhandlungen 30:73-130 [M. Carrano/M. Carrano/M. Carrano] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 51573: authorized by Matt Carrano, entered by Matt Carrano on 08.06.2005

Creative Commons license: CC BY (attribution)