Ute Trail, Roan Plateau (station 1): Bridgerian, Colorado
collected by T.D.A. Cockerell, J. Byram, Mrs. Cockerell 1922

List of taxa
Where & when
Taphonomy & methods
Metadata & references
Taxonomic list
Insecta - Hymenoptera - Formicidae
Archimyrmex rostratus n. gen., n. sp. Cockerell 1923
1 specimen
UCM 15174/USNM 69617 (1 measurement)
Insecta - Diptera - Syrphidae
Syrphus eocenicus n. sp. Cockerell 1925
Cockerell 1925 1 specimen
USNM 69179 (1 measurement)
see common names

Country:United States State/province:Colorado
Coordinates: 39.6° North, 108.2° West (view map)
Paleocoordinates:43.4° North, 94.6° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Period:Paleogene Epoch:Eocene
10 m.y. bin:Cenozoic 2
Key time interval:Bridgerian
Age range of interval:50.30000 - 46.20000 m.y. ago
Formation:Green River
Lithology and environment
Primary lithology: diatomite
Environment:lacustrine - large Tectonic setting:intermontane basin
Modes of preservation:mold/impression
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Museum repositories:UCM,USNM
Collectors:T.D.A. Cockerell, J. Byram, Mrs. Cockerell Collection dates:July 1922
Database number:114007
Authorizer:M. Clapham Enterer:J. Karr, M. Clapham
Modifier:M. Clapham Research group:paleoentomology
Created:2011-08-08 13:17:46 Last modified:2014-08-06 21:00:13
Access level:the public Released:2011-08-08 13:17:46
Creative Commons license:CC BY
Reference information

Primary reference:

44405. T. D. A. Cockerell. 1923. The earliest known ponerine ant. The Entomologist 56:51-52 [M. Clapham/M. Clapham]

Secondary references:

5050ETE 762T. D. A. Cockerell. 1925. Fossil insects in the United States National Museum. Proceedings of the United States National Museum 64(13):1-15 [C. Labandeira/C. Labandeira/M. Clapham]