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

When: Guandacol Formation, Arnsbergian (327.0 - 323.7 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

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)