Family Trigonalidae Cresson 1887 (wasp)
Insecta - Hymenoptera - Trigonalidae
Alternative spelling: Trigonalyidae
Parent taxon: Trigonaloidea according to S. B. Archibald et al. 2018
See also Carpenter 1992, Rasnitsyn 1986, Rasnitsyn and Brothers 2009, Sharkey 2007 and Statz 1938
Sister taxa: none
Subtaxa: Darbigonalus Eotrigonalis Trigonalys
Ecology:
Distribution:
• Oligocene of Germany (1 collection)
• Eocene of Canada (2: British Columbia), the Russian Federation (1)
• Cretaceous of Mongolia (1), Myanmar (1)
Total: 6 collections each including a single occurrence