Insecta - Diptera - Mycetophilidae

Full reference: S. H. Scudder. 1877. The First Discovered Traces of Fossil Insects in the American Tertiaries. Bulletin of the United States Geological and Geographical Survey of the Territories 3:741-762

Belongs to Sackenia according to S. S. Oliveira and D. D. S. Amorim 2021

See also Johannsen 1909, Scudder 1877, Scudder 1885 and Scudder 1890

Sister taxon: Sackenia gibbosa

Type specimen: Its type locality is Chagrin Valley, which is in a Bridgerian lacustrine - large shale in the Green River Formation of Colorado

Ecology:

Distribution: found only at Chagrin Valley

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Specimen images are retrieved through the ePANDDA API.