Dakin (Kishenehn) (Eocene of the United States)

Where: Montana (48.4° N, 113.7° W: paleocoordinates 51.9° N, 100.4° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Coal Creek Member (Kishenehn Formation), Lutetian (47.8 - 41.3 Ma)

• Middle sequence of the Coal Creek member of the Kishenehn Formation, which has been estimated to be 46.2 +/- 0.4 myo (Lutetian) by 40Ar/39Ar analysis and 43.5 +/- 4.9 myo by fission-track analysis

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified, carbonaceous shale

• Paper/oil shale

Size classes: macrofossils, mesofossils

Preservation: adpression

Collected by Dale Greenwalt in 2009, 2011; reposited in the USNM

Collection methods: mechanical,

Primary reference: R. E. Harbach and D. Greenwalt. 2012. Two Eocene species of Culiseta (Diptera: Culicidae) from the Kishenehn Formation in Montana. Zootaxa 3530:25-34 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 135666: authorized by Matthew Clapham, entered by Matthew Clapham on 01.11.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Blattodea - Ectobiidae
Latiblattella avita n. sp.2 Greenwalt and Vidlicka 2015 cockroach
USNM 595139
 Diptera - Culicidae
Culiseta kishenehn Harbach and Greenwalt 2012 mosquito
USNM 547066
Culiseta lemniscata n. sp. Harbach and Greenwalt 2012 mosquito
USNM 547065, 546535
 Diptera - Dixidae
Dixella spinilobata n. sp.1 Greenwalt and Moulton 2016 meniscus midge
USNM 553522
Dixella eomarginata n. sp.1 Greenwalt and Moulton 2016 meniscus midge
USNM 553521