Chagrin Valley (Eocene of the United States)

Where: Colorado (39.0° N, 108.0° W: paleocoordinates 42.8° N, 94.6° W)

When: Green River Formation, Bridgerian (50.3 - 46.2 Ma)

Environment/lithology: lacustrine - large; diatomaceous shale

Size classes: macrofossils, mesofossils

Preservation: mold/impression, adpression

Collected by W. Denton

Primary reference: S. H. Scudder. 1875. The Tertiary Physopoda of Colorado. Bulletin of the United States Geological and Geographical Survey of the Territories 2(1):221-223 [C. Labandeira/C. Labandeira/J. Karr]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 121146: authorized by Matthew Clapham, entered by Jered Karr on 28.11.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Hemiptera - Fulgoridae
"Aphana atava n. sp." = Aphaena atava2
"Aphana atava n. sp." = Aphaena atava2 Scudder 1877 fulgorid planthopper
 Hemiptera -
Delphax senilis n. sp.2 Scudder 1877 true bug
 Hemiptera - Cicadellidae
Bythoscopus lapidescens n. sp.2 Scudder 1877 leafhopper
Tettigonia obtecta n. sp.2 Scudder 1877 leafhopper
 Thysanoptera - Aeolothripidae
Melanothrips extincta n. sp. Scudder 1875 thrips
 Hymenoptera - Ichneumonidae
Ichneumon petrinus n. sp.2 Scudder 1877 ichneumon wasp
 Coleoptera - Staphylinidae
Gyrophaena saxicola n. sp.1 Scudder 1876 rove beetle
Oxytelus pristinus n. sp.1 Scudder 1876 rove beetle
 Coleoptera - Chrysomelidae
Bruchus anilis n. sp.1 Scudder 1876 leaf beetle
 Coleoptera - Curculionidae
Entimus primordialis n. sp.1 Scudder 1876 snout beetle
 Diptera - Chironomidae
Chironomus patens n. sp.2 Scudder 1877 non biting midge
Chironomus depletus n. sp.2 Scudder 1877 non biting midge
 Diptera - Chaoboridae
Corethra exita n. sp.2 Scudder 1877 phantom midge
 Diptera - Syrphidae
Eristalis lapideus n. sp.2 Scudder 1877 hover fly
 Diptera - Muscidae
"Musca" sp.2 Linnaeus 1758 house fly
four contracted skins probably representing new species
 Diptera - Oestridae
"Musca bibosa n. sp." = Cuterebra bibosa2, "Musca ascarides n. sp." = Cuterebra ascarides2, "Musca hydropica n. sp." = Dermatobia hydropica2
"Musca bibosa n. sp." = Cuterebra bibosa2 Scudder 1877 bot fly
1 body and 1 skin
"Musca ascarides n. sp." = Cuterebra ascarides2 Scudder 1877 bot fly
considerable number of specimens
"Musca hydropica n. sp." = Dermatobia hydropica2 Scudder 1877 bot fly
2 bodies and 1 skin
 Diptera - Heleomyzidae
Heteromyza detecta n. sp.2 Scudder 1877 fly
 Diptera - Mycetophilidae
Sackenia arcuata n. gen. n. sp.2, Mycetophila occultata n. sp.2
Sackenia arcuata n. gen. n. sp.2 Scudder 1877 fungus gnat
Mycetophila occultata n. sp.2 Scudder 1877 fungus gnat
 Diptera - Cecidomyiidae
"? Cecidomyidae indet." = Cecidomyiidae2, Lithomyza condita n. gen. n. sp.2
"? Cecidomyidae indet." = Cecidomyiidae2 Newman 1835 gall midge
Lithomyza condita n. gen. n. sp.2 Scudder 1877 gall midge
 Diptera - Limoniidae
Dicranomyia stigmosa2 Scudder 1877 crane fly
 Diptera - Tipulidae
Spiladomyia simplex n. gen. n. sp.2
Spiladomyia simplex n. gen. n. sp.2 Scudder 1877 crane fly
 Diptera -
"Musca vinculata n. sp." = Vinculomusca vinculata2
"Musca vinculata n. sp." = Vinculomusca vinculata2 Scudder 1877 fly
many larvae skins on the same rock
 Trichoptera - Hydropsychidae
"Phryganea operta n. sp." = Hydropsyche operta2
"Phryganea operta n. sp." = Hydropsyche operta2 Scudder 1877 net-spinning caddisfly