Full reference: M. Burr. 1899. Essai sur les Eumastacides, tribu de Acridiodea. Anales de la Sociedad Española de Historia Natural 28:75-112
Parent taxon: Acridomorpha according to H. J. Song et al. 2020
See also Gorochov 2012, Heads 2008, Kevan and Wighton 1981 and Song et al. 2015
Sister taxa: Acridoidea, Locustopsoidea, Pneumoroidea, Proscopioidea, Pyrgomorphoidea, Tanaoceroidea, Trigonopterygoidea
Subtaxa: Chorotypidae Episactidae Eumastacidae Promastacidae
Ecology: fast-moving ground dwelling grazer-herbivore
Distribution:
• Miocene of the Dominican Republic (3 collections)
• Oligocene of United States (1: Montana)
• Eocene of Canada (1: British Columbia), Denmark (2), United States (15: Colorado, Wyoming)
• Paleocene of China (1), France (1)
• Cretaceous of China (1)
• Jurassic of Kazakhstan (1)
Total: 26 collections including 28 occurrences