Dakin site, Middle Fork Flathead River (Kishenehn): Lutetian, Montana
collected by Dale Greenwalt

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Insecta - Diptera - Culicidae
Culiseta kishenehn Harbach and Greenwalt 2012
1 specimen
USNM 547066
Culiseta lemniscata n. sp. Harbach and Greenwalt 2012
2 specimens
USNM 547065, 546535 (1 measurement)
Insecta - Diptera - Dixidae
Dixella eomarginata n. sp. Greenwalt and Moulton 2016
Greenwalt and Moulton 2016 1 specimen
USNM 553521 (2 measurements)
Dixella spinilobata n. sp. Greenwalt and Moulton 2016
Greenwalt and Moulton 2016 1 specimen
USNM 553522 (2 measurements)
Insecta - Diptera - Keroplatidae
Macrocera apithanos n. sp. Kerr and Greenwalt 2022
Greenwalt et al. 2022 2 specimens
USNM 624407, 768010 (2 measurements)
Insecta - Diptera - Mycetophilidae
Rymosia hypnolithica n. sp. Kerr 2019
Greenwalt et al. 2019 1 specimen
USNM 624134
Insecta - Diptera - Sciaridae
Eosciarites hermes n. gen., n. sp. Greenwalt 2019
Greenwalt et al. 2019 1 specimen
USNM 624633
Insecta - Diptera - Anisopodidae
Sylvicola silibrarius Greenwalt 2019
Greenwalt et al. 2019 1 specimen
USNM 621508
Insecta - Diptera - Bibionidae
Dilophus idanos n. sp. Fitzgerald and Greenwalt 2022
Greenwalt et al. 2022 2 specimens
USNM 624840, 768228 (2 measurements)
Insecta - Diptera - Asilidae
Kishenehnoasilus bhl n. gen., n. sp. Dikow 2019
Greenwalt et al. 2019 1 specimen
USNM 624491
Insecta - Diptera - Bombyliidae
Tmemophlebia carolinae n. sp. Evenhuis and Greenwalt 2022
Greenwalt et al. 2022 1 specimen
USNM 768156 (2 measurements)
Insecta - Diptera - Platypezidae
Agathomyia eocenica n. sp. Tkoč 2019
Greenwalt et al. 2019 3 specimens
USNM 553697, 622565, 626133 (unclear if paratypes come from same locality)
Insecta - Diptera - Dolichopodidae
Microphorella fragilis n. sp. Cumming and Greenwalt 2022
Greenwalt et al. 2022 1 specimen
USNM 624117 (2 measurements)
Salishomyia eocenica n. gen., n. sp. Bickel 2019
Greenwalt et al. 2019 1 specimen
USNM 622501
Insecta - Diptera - Rhagionidae
Litoleptis araeostylus n. sp. Greenwalt 2019
Greenwalt et al. 2019 1 specimen
USNM 624657
Insecta - Diptera - Scatopsidae
Efcookella nigra n. sp. Greenwalt 2019
Greenwalt et al. 2019 1 specimen
USNM 618088
Insecta - Blattodea - Pseudophyllodromiidae
Latiblattella avita n. sp. Greenwalt and Vidlička 2015
Greenwalt and Vidlička 2015 1 specimen
USNM 595139 (1 measurement)
see common names

Geography
Country:United States State/province:Montana
Coordinates: 48.4° North, 113.7° West (view map)
Paleocoordinates:51.9° North, 100.4° West
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period:Paleogene Epoch:Eocene
Stage:Lutetian 10 m.y. bin:Cenozoic 2
Key time interval:Lutetian
Age range of interval:47.80000 - 41.20000 m.y. ago
Stratigraphy
Formation:Kishenehn Member:Coal Creek
Stratigraphic resolution:group of beds
Stratigraphy comments: 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
Lithology and environment
Primary lithology:planar lamination lithified carbonaceous "shale"
Lithology description: Paper/oil shale
Environment:lacustrine - large Tectonic setting:rift
Taphonomy
Modes of preservation:adpression
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection methods:mechanical,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:USNM
Collectors:Dale Greenwalt
Metadata
Database number:135666
Authorizer:M. Clapham Enterer:M. Clapham
Modifier:M. Clapham Research group:paleoentomology
Created:2012-11-01 12:20:33 Last modified:2019-08-31 19:31:58
Access level:the public Released:2012-11-01 12:20:33
Creative Commons license:CC BY
Reference information

Primary reference:
43394. 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]

Secondary references:

82203 D. E. Greenwalt, D. S. Amorim, M. Hauser, P. H. Kerr, S. J. Fitzgerald, S. L. Winterton, J. M. Cumming, N. L. Evenhuis, and B. J. Sinclair. 2022. Diptera of the Middle Eocene Kishenehn Formation II. Palaeontologia Electronica 25(2:a22):1-52 [M. Clapham/M. Clapham]
69813 D. E. Greenwalt, D. J. Bickel, P. H. Kerr, G. R. Curler, B. V. Brown, H. Jong, S. J. Fitzgerald, T. Dikow, M. Tkoč, C. Kehlmaier, and D. D. S. Amorim. 2019. Diptera of the middle Eocene Kishenehn Formation. I. Documentation of diversity at the family level. Palaeontologia Electronica 22(2.50A):1-56 [M. Clapham/M. Clapham/M. Clapham]
61239 D. E. Greenwalt and J. K. Moulton. 2016. The first fossil New World Dixidae with a critical discussion of generic definitions . Palaeontologia Electronica 19(3.55A):1-32 [M. Clapham/M. Clapham]
54886 D. E. Greenwalt and L. Vidlička. 2015. Latiblattella avita sp. nov. (Blattaria: Ectobiidae) from the Eocene Kishenehn Formation, Montana, USA. Palaeontologia Electronica 18(1.16A):1-9 [M. Clapham/M. Clapham/M. Clapham]