Peterson Creek, Ruby River Basin (Oligocene of the United States)

Where: Madison County, Montana (45.2° N, 112.2° W: paleocoordinates 46.5° N, 105.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Rupelian (33.9 - 28.1 Ma)

Environment/lithology: lacustrine - large; lithified shale

Size class: mesofossils

Preservation: adpression

Collected by Claude W. Hibbard in 1948; reposited in the UMMP

Primary reference: F. M. Hull. 1960. A new genus and four new species of fossil Diptera from Montana and Colorado. Contributions from the Museum of Paleontology, University of Michigan 15(11):269-279 [C. Labandeira/C. Labandeira/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 132747: authorized by Matthew Clapham, entered by Matthew Clapham on 25.08.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Insecta
 Coleoptera - Carabidae
? Harpalini indet.
? Harpalini indet. Bonelli 1810 ground beetle
UMMP 26060, 26061, 26080, 26084, 26091
 Diptera - Syrphidae
Archisyrphus opacus n. gen. n. sp.
Archisyrphus opacus n. gen. n. sp. Hull 1960 hover fly
UMMP 25984
 Diptera - Asilidae
Holopogon archilestes n. sp.
Holopogon archilestes n. sp. Hull 1960 robber fly
UMMP 25983
 Diptera - Bibionidae
Plecia sp., Plecia inflata n. sp.
Plecia sp. Wiedemann 1823 love bug
UMMP 26053
Plecia inflata n. sp. Hull 1960 love bug
UMMP 25980, 26048, 26035