300 m W of Quebrada del Durazno (Triassic of Argentina)

Where: Argentina (33.1° S, 69.1° W: paleocoordinates 49.8° S, 34.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Potrerillos Formation (Uspallata Group), Carnian (237.0 - 228.0 Ma)

• Upper Section of the Potrerillos Formation

Environment/lithology: lacustrine delta plain; white 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).
• "The Potrerillos Formation is composed of thick, coarse conglomerates at its base and by thinner conglomerates, sandstones, bentonites, mudstones, and carbonaceous shales in the middle and upper part of the unit. It represents a mix of braided-river channels, floodplain deposits, and high-sinuosity meandering channels." Martins-Neto et al., 2007 Insects come from the upper part of the formation

Size classes: macrofossils, mesofossils

Preservation: mold/impression

Collection methods: Specimens kept in PZ-CTES – Paleozoological Collection of the Facultad de Ciencias Exactas, Naturales y Agrimensura de la Universidad Nacional del Nordeste, Mendoza, Argentina.

Primary reference: R. G. Martins-Neto and O. F. Gallego. 1999. The Triassic insect fauna from Argentina. I. Auchenorrhyncha, Miomoptera and Ensifera. Revista Española de Paleontología 14:191-202 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 123009: authorized by Matthew Clapham, entered by Jered Karr on 10.01.2012, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Insecta
 Orthoptera - Haglidae
? Notopamphagopsis "sp. 1"
? Notopamphagopsis "sp. 1" Cabrera 1928 hump-winged cricket
CTES-PZ 7390
 Coleoptera - Schizocoleidae
Argentinosyne duraznoensis n. sp.
Argentinosyne duraznoensis n. sp. Martins-Neto and Gallego 2008 beetle
MCNAM-PI 24304(CTES-PZ 5732)
 Miomoptera -
Miomina mendozina n. sp.
Miomina mendozina n. sp. Martins-Neto and Gallego 1999 winged insect
PZ-CTES 5731
 Hemiptera - Chiliocyclidae
Argentinocicada magna n. gen. n. sp., Argentinocicada minima n. sp.
Argentinocicada magna n. gen. n. sp. Martins-Neto and Gallego 1999 true bug
PZ-CTES 5729
Argentinocicada minima n. sp. Martins-Neto and Gallego 1999 true bug
PZ-CTES 5776, 5733
 Hemiptera - Dysmorphoptilidae
Dysmorphoptiloides acostai n. sp.
Dysmorphoptiloides acostai n. sp. Martins-Neto and Gallego 1999 true bug
PZ-CTES 5772; 7200, 260 in Martins-Neto et al., 2008
 Hemiptera - Scytinopteridae
Potrerillia nervosa n. gen. n. sp.
Potrerillia nervosa n. gen. n. sp. Martins-Neto and Gallego 1999 true bug
PZ-CTES 5728
 Hemiptera -
Cacheutacicada kurtzae n. gen. n. sp.
Cacheutacicada kurtzae n. gen. n. sp. Martins-Neto and Gallego 2008 true bug
MCNAM-PI 24305