English Misthodotes Cited by user Wilhelmina Will on 09 Feb 2012 Misthodotes is an extinct genus of mayflies which existed during the Permian of what is now the United States and Russia.
English Alexandrinia Cited by user Wilhelmina Will on 09 Feb 2012 Alexandrinia is an extinct genus of mayflies which existed in what is now Russia and the United States during the Permian period.