Horsefly Mine (Eocene of Canada)

Also known as H1

Where: British Columbia, Canada (52.4° N, 121.4° W: paleocoordinates 57.1° N, 103.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Ypresian (56.0 - 47.8 Ma)

Environment/lithology: lacustrine; shale

• It is proposed here Ihat the varves were deposited in the deeper regons of a stratified, monomictic or meromictic lake in a warm temperate climate
• Varved shale, with alternating Dark sapropel laminae & Light tuff laminae

Size classes: macrofossils, mesofossils

Preservation: mold/impression, adpression

Collected by Lawrence M. Lambe in 1906

• "In the year 1906, during geological explorations in the southern interior of British Columbia, Mr. lawrence M. Lambe, of the Geological Survey, collected a number of remains of Tertiary insects..."

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 119857: authorized by Matthew Clapham, entered by Jered Karr on 02.11.2011, edited by Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Orthoptera - Promastacidae
Promastox archaicus n. gen. n. sp.
Promastox archaicus n. gen. n. sp. Handlirsch 1910 grasshopper
Collected July 20
 Dicondylia -
Coleoptera indet. Linnaeus 1758 beetle
Collected July 20
 Diptera - Bibionidae
"Penthetria dilatata n. sp." = Plecia dilatata, "Plecia transitoria" = Plecia transitoria1, "Penthetria fragmentum n. sp." = Plecia transitoria, "Penthetria reducta n. sp." = Plecia reducta, "Penthetria angustipennis n. sp." = Plecia angustipennis, "Penthetria platyptera n. sp." = Plecia platyptera, "Penthetria curtula n. sp." = Plecia curtula
"Penthetria dilatata n. sp." = Plecia dilatata Handlirsch 1910 love bug
Collected July 20
"Plecia transitoria" = Plecia transitoria1 Handlirsch 1910 love bug
GSC 14470
"Penthetria fragmentum n. sp." = Plecia transitoria Handlirsch 1910 love bug
Collected July 20; GSC 7260
"Penthetria reducta n. sp." = Plecia reducta Handlirsch 1910 love bug
Collected July 20
"Penthetria angustipennis n. sp." = Plecia angustipennis Handlirsch 1910 love bug
Collected July 20
"Penthetria platyptera n. sp." = Plecia platyptera Handlirsch 1910 love bug
Collected July 20
"Penthetria curtula n. sp." = Plecia curtula Handlirsch 1910 love bug
Collected July 20
Actinopteri
 Hiodontiformes - Hiodontidae
Eohiodon woodruffi2 Wilson 1978