Quilchena (Eocene of Canada)

Where: British Columbia, Canada (50.1° N, 120.5° W: paleocoordinates 54.8° N, 103.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Coldwater Beds Formation, Ypresian (56.0 - 47.8 Ma)

• U-Pb dating of thick tephra combined with Ar-Ar dates of sanidine from same bed. Tephra deposited within insect-bearing shales.

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified, tuffaceous, brown mudstone

Size classes: macrofossils, mesofossils

Preservation: mold/impression, adpression

Collected by Lawrence M. Lambe in 1906

Primary reference: A. Handlirsch. 1910. Canadian fossil Insects. 5. Insects from the Tertiary lake deposits of the southern interior of British Columbia, collected by Mr. Lawrence M. Lambe. Contributions to Canadian Palaeontology 2(3):93-129 [M. Clapham/J. Karr]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 119896: authorized by Matthew Clapham, entered by Jered Karr on 04.11.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

• A wide variety of fossils occur in rocks of both facies, including abundant fish remains, insects, and plants, and rare occurrences of molluscs, ostracods, and birds.
Insecta
 Hemiptera - Gerridae
"Gerris defuncta n. sp." = Telmatrechus defunctus
"Gerris defuncta n. sp." = Telmatrechus defunctus Handlirsch 1910 water strider
Collected by July 31
 Diptera - Bibionidae
"Penthetria ? pictipennis" = Plecia pictipennis
"Penthetria ? pictipennis" = Plecia pictipennis Handlirsch 1910 love bug
Collected by July 31; GSC 7256