Cerro Guandacol, Quebrada de las Libélulas (Carboniferous of Argentina)

Where: Argentina (29.5° S, 68.5° W: paleocoordinates 50.3° S, 65.6° W)

When: Guandacol Formation, Arnsbergian (326.4 - 318.1 Ma)

• Basal part of the Guandacol Formation (in the earlier sense, not including the Aguas Blanquitas that may be considered as the basal member). Middle part of formation dated as earliest Bashkirian (c. 320-321 Ma from U/Pb ages), and lower part dated at 326 Ma (Valdez et al. 2020), suggesting a Serpukhovian age for the insects.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, black claystone

• Interpreted as lacustrine environment but presence of brachiopods indicates that it is actually marine

Size class: macrofossils

Preservation: mold/impression

Collection methods: Repository: Paleoinvertebrate Division of the Museo Argentino de Ciencias Naturales "Bernardino Rivadavia" (MACN-In)

Primary reference: P. R. Gutiérrez, J. Muzón, and C. O. Limarino. 2000. The earliest Late Carboniferous winged insect (Insecta, Protodonata) from Argentina: geographical and stratigraphical location. Ameghiniana 37:375-378 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 166808: authorized by Matthew Clapham, entered by Matthew Clapham on 26.02.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Eugeroptera - Eugeropteridae
Tupacsala niunamenos n. gen. n. sp.
Tupacsala niunamenos n. gen. n. sp. Petrulevičius and Gutiérrez 2016 winged insect
MACN-In 2678C
 Argentinoptera - Argentinalidae
Argentinala cristinae n. gen. n. sp.
Argentinala cristinae n. gen. n. sp. Petrulevičius and Gutiérrez 2016 winged insect
MACN-In 2678A-B
 Kukaloptera - Kirchneralidae
Kirchnerala treintamil n. gen. n. sp.
Kirchnerala treintamil n. gen. n. sp. Petrulevičius and Gutiérrez 2016 winged insect
MACN-In 2678D