Disbrow Creek, Middle Fork Flathead River (Kishenehn): Lutetian, Montana
collected by Dale Greenwalt

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Insecta - Odonata - Eolestidae
Eolestes ramosus n. sp. Greenwalt and Bechly 2014
Greenwalt and Bechly 2014 1 specimen
USNM 559047 (1 measurement)
Insecta - Odonata
Lutetialestes uniformis n. gen., n. sp. Greenwalt and Bechly 2014
Greenwalt and Bechly 2014 1 specimen
USNM 559048
Insecta - Diptera - Psychodidae
Bruchomyiinae indet. Alexander 1920
Greenwalt et al. 2019 1 specimen
USNM 619952
Insecta - Diptera - Canthyloscelidae
Synneuron eomontana n. sp. Amorim and Greenwalt 2020
Amorim and Greenwalt 2020 1 specimen
USNM 722159 (1 measurement)
Insecta - Diptera - Bolitophilidae
Bolitophila warreni n. sp. Greenwalt and Blagoderov 2019
Greenwalt and Blagoderov 2019 1 specimen
USNM 595138 (2 measurements)
Insecta - Diptera - Dixidae
Dixella curvistyla n. sp. Greenwalt and Moulton 2016
Greenwalt and Moulton 2016 1 specimen
USNM 546860 (2 measurements)
Insecta - Diptera - Culicidae
Culiseta kishenehn Harbach and Greenwalt 2012
1 specimen
USNM 546534
see common names

Geography
Country:United States State/province:Montana
Coordinates: 48.4° North, 113.7° West (view map)
Paleocoordinates:51.9° North, 100.3° 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 - 41.30000 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:135665
Authorizer:M. Clapham Enterer:M. Clapham
Modifier:M. Clapham Research group:paleoentomology
Created:2012-11-01 12:19:01 Last modified:2019-08-31 19:24:02
Access level:the public Released:2012-11-01 12:19:01
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:

73542 D. D. S. Amorim and D. E. Greenwalt. 2020. Cretaceous and Eocene fossils of the rare extant genus Synneuron Lundstrom (Diptera: Canthyloscledidae): evidence of a true Pangean clade. Cladistics 36:413-423 [M. Clapham/L. Guerra/M. Clapham]
53556 D. E. Greenwalt and G. Bechly. 2014. A re-description of the fossil damselfly Eolestes syntheticus Cockerell, 1940 (Odonata: Zygoptera: Eolestidae n. fam.) with description of new taxa from the Eocene of North America. Zootaxa 3887:138-156 [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]
68475 D. E. Greenwalt and V. A. Blagoderov. 2019. Review of the fossil record of Bolitophilidae, with description of new taxa and discussion of position of Mangas Kovalev (Diptera: Sciaroidea). Zootaxa 4567:546-560 [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]