Ruby River Site 6 (Oligocene of the United States)

Where: Madison County, Montana (45.2° N, 112.2° W: paleocoordinates 46.6° N, 104.6° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Passamari Member (Renova Formation), Whitneyan (33.3 - 30.8 Ma)

• Whitneyan North American land mammal age according to Wing, 1987.

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified shale

Size class: mesofossils

Preservation: adpression

Collected by John Wulf, John Alley

• Repository: collection of John Alley, Butte, Montana

Primary reference: S. E. Lewis. 1971. Three new species of fossil Diptera (Bibionidae) from the Ruby River Basin (Oligocene) of Southwestern Montana. Annals of the Entomological Society of America 64(6):1464-1466 [M. Clapham/J. Karr]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 120622: authorized by Matthew Clapham, entered by Jered Karr on 18.11.2011, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Orthoptera - Locustopsidae
? Zeunerella lewisi1 Kevan and Wighton 1981 grasshopper
6-227
 Dicondylia -
Hemiptera indet.3 Linnaeus 1758 true bug
 Hemiptera - Gerridae
Gerridae indet.3 Leach 1815 water strider
 Hemiptera - Lygaeidae
Lygaeidae indet.3 Schilling 1829 milkweed bug
 Hemiptera - Pentatomidae
Pentatomidae indet.3 Leach 1815 stink bug
 Hemiptera - Cydnidae
Cydnidae indet.3 Billberg 1820 burrowing bug
 Hemiptera - Coreidae
Coreidae indet.3 Leach 1815 leaf-footed bug
 Diptera - Diopsidae
Prosphyracephala rubiensis n. sp.2 Lewis 1971 stalk-eyed fly
RR 6-390
 Diptera - Bibionidae
Penthetria abacula n. sp. Lewis 1971 march fly
6-25, 6-29
Penthetria alderensis n. sp. Lewis 1971 march fly
6-114
Penthetria rubiensis n. sp. Lewis 1971 march fly
6-24