3 miles up North Fork of Similkameen River (Eocene of Canada)

Where: British Columbia, Canada (49.5° N, 120.6° W: paleocoordinates 54.1° N, 103.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Vermilion Bluffs Member (Allenby Formation), Ypresian (56.0 - 47.8 Ma)

• The "Hospital Hill" exposure of the Vermilion Bluffs Shale in Princeton is estimated to be 52.08 +/- 0.12 million years old (Archibald, 2005).

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine; lithified shale and lithified siltstone

Size class: mesofossils

Preservation: adpression

Collected by G.M. Dawson in 1877; reposited in the GSC

Primary reference: S. H. Scudder. 1879. Appendix A. The fossil insects collected in 1877, by Mr. G.M. Dawson, in the interior of British Columbia. Geological Survey of Canada, Report of Progress for 1877-1878 175-185 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 112781: authorized by Matthew Clapham, entered by Christina Feng on 16.07.2011, edited by Jered Karr and Karl Volkman

Creative Commons license: CC BY (attribution)

Taxonomic list

Polypodiopsida
 Equisetales - Equisetidae
Equisetum similkamense n. sp.1 Dawson 1878 horsetail
Insecta
 Hymenoptera - Braconidae
Bracon sp. Fabricius 1805 wasp
GSC 69(78)
 Hemiptera - Gerridae
"Hygrotrechus stali n. sp." = Telmatrechus stali
"Hygrotrechus stali n. sp." = Telmatrechus stali Scudder 1879 water strider
GSC 70, 71(72), 73
 Hemiptera - Cicadellidae
Coelidia columbiana n. sp. Scudder 1879 leafhopper
GSC 75
 Hemiptera -
Planophlebia gigantea n. gen. n. sp.
Planophlebia gigantea n. gen. n. sp. Scudder 1879 true bug
GSC 77
 Diptera - Bibionidae
Plecia transitoria2, Plecia canadensis2, "Penthetria similkameena n. sp." = Plecia similkameena
Plecia transitoria2 Handlirsch 1910 love bug
GSC 14467
Plecia canadensis2 Handlirsch 1910 love bug
GSC 6172
"Penthetria similkameena n. sp." = Plecia similkameena Scudder 1879 love bug
GSC 6172 (no. 76, 79, 80, 81, 82, 83)
 Diptera - Asilidae
Asilidae indet.3 Latreille 1802 robber fly
GSC 67(68)