Among the many new genera established by Anton Handlirsch in his monumental work "Die .fossilen Insekten und die Phylogenie der rezenten Fortnen: Ein Handbuch fur Palaontologen und Zoologen" (Wilhelm Engelman, Leipzig, 1906-1908) was a genus of Ephemer- optera for which he designated no type-species and for which one has still not been designated.
Hubbard, Michael D.
"Type-Species Designation for the Jurassic Mayfly Genus Mesephemera (Ephemeroptera: Mesephemeridae),"
The Great Lakes Entomologist: Vol. 14
, Article 13.
Available at: https://scholar.valpo.edu/tgle/vol14/iss1/13