Tribe Ephemerellini Klapalek 1909 (mayfly)
Insecta - Ephemeroptera - Ephemerellidae
Parent taxon: Ephemerellinae according to L. M. Jacobus and W. P. McCafferty 2008
See also Jacobus and McCafferty 2006
Sister taxa: none
Subtaxa: Ephemerella
Ecology:
Distribution:
• Eocene of Poland (1 collection), the Russian Federation (1)
Total: 2 collections each including a single occurrence