Dakin site, Middle Fork Flathead River (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; 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 - Pseudophyllodromiidae
Latiblattella avita n. sp.4 Greenwalt and Vidlička 2015 cockroach
USNM 595139
 Diptera - Scatopsidae
Efcookella nigra n. sp.2 Greenwalt 2019 minute black scavenger fly
USNM 618088
 Diptera - Anisopodidae
Sylvicola silibrarius2 Greenwalt 2019 wood gnat
USNM 621508
 Diptera - Bibionidae
Dilophus idanos n. sp.1 Fitzgerald and Greenwalt 2022 march fly
USNM 624840, 768228
 Diptera - Keroplatidae
Macrocera apithanos n. sp.1 Kerr and Greenwalt 2022 predatory fungus gnat
USNM 624407, 768010
 Diptera - Mycetophilidae
Rymosia hypnolithica n. sp.2 Kerr 2019 fungus gnat
USNM 624134
 Diptera - Sciaridae
Eosciarites hermes n. gen. n. sp.2
Eosciarites hermes n. gen. n. sp.2 Greenwalt 2019 dark-winged fungus gnat
USNM 624633
 Diptera - Rhagionidae
Litoleptis araeostylus n. sp.2 Greenwalt 2019 snipe fly
USNM 624657
 Diptera - Platypezidae
Agathomyia eocenica n. sp.2 Tkoč 2019 flat-footed fly
USNM 553697, 622565, 626133 (unclear if paratypes come from same locality)
 Diptera - Dolichopodidae
Microphorella fragilis n. sp.1 Cumming and Greenwalt 2022 long-legged fly
USNM 624117
Salishomyia eocenica n. gen. n. sp.2 Bickel 2019 long-legged fly
USNM 622501
 Diptera - Asilidae
Kishenehnoasilus bhl n. gen. n. sp.2
Kishenehnoasilus bhl n. gen. n. sp.2 Dikow 2019 robber fly
USNM 624491
 Diptera - Bombyliidae
Tmemophlebia carolinae n. sp.1 Evenhuis and Greenwalt 2022 bee fly
USNM 768156
 Diptera - Dixidae
Dixella spinilobata n. sp.3 Greenwalt and Moulton 2016 meniscus midge
USNM 553522
Dixella eomarginata n. sp.3 Greenwalt and Moulton 2016 meniscus midge
USNM 553521
 Diptera - Culicidae
Culiseta kishenehn Harbach and Greenwalt 2012 mosquito
USNM 547066
Culiseta lemniscata n. sp. Harbach and Greenwalt 2012 mosquito
USNM 547065, 546535