Where: La Rioja, Argentina (30.8° S, 66.6° W: paleocoordinates 52.0° S, 65.4° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: La Divisoria Member (Malanzán Formation), Bashkirian (323.2 - 315.2 Ma)
• Stated as Lower Namurian but later publications state that this site is likely upper Namurian or Namurian C based on palynology. Radiometric dating in Gulbranson et al. (2010) indicates a Bashkirian age.
• group of beds-level stratigraphic resolution
Environment/lithology: terrestrial; carbonaceous lithology not reported
Size class: macrofossils
Preservation: mold/impression
Collected by S. Archangelsky & R. Leguizamon; reposited in the MLP
Primary reference: E. F. Riek and J. Kukalová-Peck. 1984. A new interpretation of dragonfly wing venation based upon Early Upper Carboniferous fossils from Argentina (Insecta: Odonatoidea) and basic character states in pterygote wings. Canadian Journal of Zoology 62:1150-1166 [M. Clapham/J. Karr/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 108150: authorized by Matthew Clapham, entered by Jered Karr on 23.04.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Pteridopsida | |
Botrychiopsis weissiana Kurtz 1894 | |
Ginkgophyllum | |
Insecta | |
Xenoptera riojaensis n. gen. n. sp.
| |
Eugeropteron lunatum n. gen. n. sp.
Eugeropteron lunatum n. gen. n. sp. Riek 1984 winged insect | |
Geropteron arcuatum n. gen. n. sp.
Geropteron arcuatum n. gen. n. sp. Riek 1984 winged insect |