Where: Mendoza, Argentina (32.9° S, 69.2° W: paleocoordinates 52.4° S, 39.4° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Lower Member (Potrerillos Formation), Longobardian (242.0 - 235.0 Ma)
• Tuffs from lower and middle sections dated at 239.2 ± 4.5 Ma, 239.7 ± 2.2 Ma and 230.3 ± 2.3 Ma, so lower member is likely latest Ladinian.
Environment/lithology: wet floodplain; lithified, black, carbonaceous shale
•The Cuyo Basin may be characterised as a passive rift basin produced as a result of generalised extension induced by crustal thinning and collapse of the Upper Palaeozoic (Gondwana) orogen (Llambías and Sato, 1990, 1995; Spalletti, 1999). It can be defined as a half graben that shows strong asymmetric structural and depositional features, as well as intrabasinal highs or transference zones that delimit different depocentres (Kokogián et al., 1988, 1993; Ramos and Kay, 1991; López Gamundí, 1994; Spalletti, 1999, 2001).
Size classes: macrofossils, mesofossils
Collected by O. F. Gallego & A. M. Zavattieri in 1995 & 2005
Primary reference: R. G. Martins-Neto, O. F. Gallego, and A. M. Zavattieri. 2007. A new Triassic insect fauna from Cerro Bayo, Potrerillos (Mendoza Province, Argentina) with descriptions of new taxa (Insecta: Blattoptera and Coleoptera). Alcheringa 31:199-213 [M. Clapham/J. Karr]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 115104: authorized by Matthew Clapham, entered by Jered Karr on 27.08.2011
Creative Commons license: CC BY (attribution)