You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Genesee Remove constraint Place: Genesee Place Michigan Remove constraint Place: Michigan Place Otisville, ca 3 mi NW of; Thetford Twp Remove constraint Place: Otisville, ca 3 mi NW of; Thetford Twp Topic Osmundales Remove constraint Topic: Osmundales Topic Polypodiopsida Remove constraint Topic: Polypodiopsida