†family Exaeretopteridae Pierce 1944 (grasshopper)
Insecta - Orthoptera - Exaeretopteridae
Almost certainly a synonym of some extant family, if the specimen is even an Orthoptera (or even a fossil).
Full reference: W. D. Pierce. 1944. Fossil arthropods of California 4. Two interesting orthopteroids from diatomaceous deposits. Bulletin of the Southern California Academy of Sciences 43:12-17
Parent taxon: Exaeretopteroidea according to W. D. Pierce 1944
Sister taxa: none
Subtaxa: Exaeretoptera
Type: Exaeretoptera
Ecology:
Distribution: found only at South of abandoned pier at Fort MacArthur (Miocene of California)