Subfamily Eruciinae Burr 1899 (grasshopper)
Insecta - Orthoptera - Chorotypidae
Alternative spellings: Erucii, Eruciidae
Full reference: M. Burr. 1899. Essai sur les Eumastacides, tribu de Acridiodea. Anales de la Sociedad EspaƱola de Historia Natural 28:75-112
Parent taxon: Chorotypidae according to S. Matt et al. 2008
See also Kevan and Wighton 1981
Sister taxon: Paleochina
Subtaxa: Erucius
Type: Erucius
Ecology: fast-moving ground dwelling grazer-herbivore
Distribution: found only at Ruby River, between Peterson and Morman Creeks (Oligocene of Montana)