Where: Alberta, Canada (52.3° N, 113.6° W: paleocoordinates 58.6° N, 90.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Paskapoo Formation, Tiffanian (61.7 - 56.8 Ma)

• upper half of unit 4

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - small; lithified, gray siltstone

Size classes: macrofossils, mesofossils

Preservation: mold/impression, adpression

Primary reference: D. C. Wighton and M. V. H. Wilson. 1986. The Gomphaeschninae (Odonata: Aeshnidae): new fossil genus, reconstructed phylogeny, and geographical history. Systematic Entomology 11:505-522 [M. Clapham/J. Karr]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 119839: authorized by Matthew Clapham, entered by Jered Karr on 02.11.2011, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)