Subfamily Perissommatinae Colless 1962 (fly)
Insecta - Diptera - Perissommatidae
Parent taxon: Perissommatidae according to E. D. Lukashevich and V. A. Blagoderov 2020
See also Lukashevich 2011
Sister taxa: Limnorhyphus, Perissordinae, Rasnicynommatinae
Subtaxa: Collessomma Gurvaniella Palaeoperissomma
Ecology:
Distribution:
• Cretaceous of Mongolia (2 collections), the Russian Federation (3)
• Jurassic of Mongolia (1), the Russian Federation (1)
Total: 7 collections including 9 occurrences