Minas de Petroleo (Kurtz coll) (Triassic of Argentina)

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

• coordinate estimated from map

• outcrop-level geographic resolution

When: Upper Member (Potrerillos Formation), Carnian (237.0 - 228.0 Ma)

• Fossil insects in the second unit, 10m from the bottom, the unit is 50m thick

Environment/lithology: lacustrine delta plain; lithified, sandy, carbonaceous shale and sandy, conglomeratic claystone

• 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).
• Arenaceous to carbonaceous shales, or fine clays, often markedly to finely laminated, with frequent plants in much greater variety than in either of the higher horizons.

Size class: macrofossils

Preservation: mold/impression

Collected by E. Glaser, G. Bodenbender in 1894-1904; reposited in the MLP

• Other Repository: Palaeontological Laboratory of Córdoba University. Material illustrated in Kurtz's (1921) atlas is from Córdoba. La Plata Museum Palaeobotanical collection is a duplicate lot from the large original set of fossils which has been subdivided by Bodenbender.

Primary reference: G. R. Wieland. 1926. South American fossil insect discovery. The American Journal of Science, Fifth Series 12:130-135 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 151547: authorized by Matthew Clapham, entered by Matthew Clapham on 07.10.2013, edited by Erin Leckey and Jered Karr

Creative Commons license: CC BY (attribution)

Taxonomic list

• It is possible that Pinto and Purper's G. mendozensis is an objective synonym of E. argentina Cockerell (1926), as their drawing closely resembles the specimen illustrated by Kurtz. Martins-Neto et al. (2003) placed E. argentina in synonymy with G. argentinarum (even though E. argentina has priority). All three are provisionally left as separate species.
Show authors, comments, and common names
Insecta
 Plecoptera - Euxenoperlidae
Gondwanoperlidium argentinarum n. gen. n. sp., "? Elcana argentina n. sp." = Gondwanoperlidium argentina, Gondwanoperlidium mendozensis n. sp.
Gondwanoperlidium argentinarum n. gen. n. sp. Pinto and Purper 1978 stonefly
MLP 8908
"? Elcana argentina n. sp." = Gondwanoperlidium argentina Cockerell 1926 stonefly
Specimen on pl 22, fig 336 of Kurtz, 1921 (part of Kurtz's Baiera argentina)
Gondwanoperlidium mendozensis n. sp. Pinto and Purper 1978 stonefly
CORD-PZ 336