Full reference: E. Newman. 1834. Attempted division of British insect into natural orders. The Entomological Magazine 2:379-431
Parent taxon: Unicalcarida according to J. Heraty et al. 2011
See also Archibald and Rasnitsyn 2015 and Sharkey 2007
Sister taxa: Apocrita, Cratoenigma, Orussoidea, Orussomorpha, Siricoidea, Vespina, Xiphydrioidea
Subtaxa: Cephidae Sepulcidae
Type: Cephus
Ecology:
Distribution:
• Eocene of Canada (2: British Columbia collections), Poland (1), United States (1: Colorado)
• Cretaceous of Brazil (6), China (1), Mongolia (8), Myanmar (1), the Russian Federation (16), Spain (2), the United Kingdom (2)
• Jurassic of Germany (5), India (1), Kazakhstan (3), Kyrgyzstan (2), Mongolia (4)
• Triassic of Germany (1)
Total: 56 collections including 85 occurrences