Quebrada del Durazno, Cerro Cacheuta (IANIGLA collection) (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: Repository: Colección Paleontológica del Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA-CCT-CONICET), Mendoza City

Primary reference: M. B. Lara and B. Wang. 2016. New hemipteran insects (Eoscarterellidae, Scytinopteridae, and Protopsyllidiidae) from the Upper Triassic Potrerillos Formation of Mendoza, Argentina. PalZ 90:49-61 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 177538: authorized by Matthew Clapham, entered by Matthew Clapham on 02.04.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Insecta
 Hemiptera - Scytinopteridae
Tipuloidea cuyana n. sp.2, Cuyanoscytinum arcucciae n. gen. n. sp.2, Duraznoscytinum aristovi n. gen. n. sp.3
Tipuloidea cuyana n. sp.2 Lara and Bashkuev 2020 true bug
IANIGLA-PI 1077
Cuyanoscytinum arcucciae n. gen. n. sp.2 Lara and Bashkuev 2020 true bug
IANIGLA-PI 1045a-b
Duraznoscytinum aristovi n. gen. n. sp.3 Lara et al. 2023 true bug
IANIGLA-PI 1063
 Hemiptera - Dysmorphoptilidae
Duraznoscarta ramosa n. gen. n. sp.
Duraznoscarta ramosa n. gen. n. sp. Lara and Wang 2016 true bug
IANIGLA-PI 3028
 Hemiptera -
Duraznovis gallegoi n. gen. n. sp.4
Duraznovis gallegoi n. gen. n. sp.4 Lara et al. 2020 true bug
IANIGLA-PB 203, 168
 Mecoptera - Permochoristidae
Duraznochorista zavattierii n. gen. n. sp.2
Duraznochorista zavattierii n. gen. n. sp.2 Lara and Bashkuev 2020 scorpionfly
IANIGLA-PI 1062a-b
 Mecoptera - Parachoristidae
Potrerillopanorpa macloughlini n. gen. n. sp.2
Potrerillopanorpa macloughlini n. gen. n. sp.2 Lara and Bashkuev 2020 scorpionfly
IANIGLA-PI 1060a-b
 Reculida - Geinitziidae
Permoshurabia argentina n. sp.1
Permoshurabia argentina n. sp.1 Lara and Aristov 2017 winged insect
IANIGLA-PI 1029
1Lara and Aristov 2017; 2Lara and Bashkuev 2020; 3Lara et al. 2023; 4Lara et al. 2020