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Queso Rallado, near Cerro Cóndor (Jurassic to of Argentina)

Where: Chubut, Argentina (43.4° S, 69.2° W: paleocoordinates 41.2° S, 28.4° W)

• coordinate based on unpublished field data

• outcrop-level geographic resolution

When: Cañadón Asfalto Formation, Toarcian to Toarcian (183.0 - 167.7 Ma)

• Usually given as Callovian, new work indicates that the Cañadón Asfalto Formation is considerably older, with dates ranging from the late Toarcian to the earliest Bathonian (Salani 2007; Cabaleri et al. 2010; Cuneo & Bowring 2010). Since the Queso Rallado locality does not represent the highest part of the formation, a Bathonian age can be exluded.

• bed-level stratigraphic resolution

Environment/lithology: lacustrine; mixed carbonate-siliciclastic sediments

• "The material is derived from a silicified mudstone within a series of lacustrine mudstones and limestones."

Size classes: macrofossils, mesofossils, microfossils

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

Primary reference: O. W. M. Rauhut, T. Martin, E. Ortíz-Jaureguizar and P. Puerta. 2002. A Jurassic mammal from South America. Nature 416:165-168 [O. Rauhut/O. Rauhut] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 67434: authorized by Oliver Rauhut, entered by Oliver Rauhut on 20.11.2006, edited by Mark Uhen, John Alroy, Matthew Carrano, Roger Benson, Evangelos Vlachos and Philip Mannion

Creative Commons license: CC BY (attribution)