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Cerro Tortuga, Bajo Trapalcó (Cretaceous to of Argentina)

Where: Rio Negro, Argentina (39.8° S, 66.7° W: paleocoordinates 42.7° S, 52.3° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Lower Member (Allen Formation), Late/Upper Campanian to Late/Upper Campanian (84.9 - 66.0 Ma)

• Sediments probably correlate with the Los Alamitos Fm. (paper cites Cione, pers. comm.). Now considered Allen Fm.

• bed-level stratigraphic resolution

Environment/lithology: fluvial; poorly lithified, fine-grained, yellow sandstone and siltstone

• "The fossil-bearing bed consists of friable, yellowish, fine-grained clean sandstone enclosed between siltstone layers."

Size classes: macrofossils, mesofossils

Collected by G. W. Rougier & crew in 2002-2004; reposited in the MLP

Collection methods: bulk, surface (float), sieve,

Primary reference: A. M. Albino. 1994. Una nueva serpiente (Reptilia) en el Cretácico Superior de Patagonia, Argentina. Pesquisas 21:58-63 [J. Alroy/J. Wertheim/J. Wertheim] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 48999: authorized by John Alroy, entered by Jill Wertheim on 05.04.2005, edited by Matthew Carrano, Roger Benson and Philip Mannion

Creative Commons license: CC BY (attribution)