Monographs Details: Hypnum revolutum (Mitt.) Lindb.
Authority: Buck, William R. 1987. Bryostephane Steereana: A Collection of Bryological Papers Presented to William Campbell Steere On The Occasion of His 80th Birthday. Mem. New York Bot. Gard. 45: 1-749.
Family:Hypnaceae
Discussion:One well preserved leafy branch, 1.45-1.56 m. The fossil leaves have a short double costa, revolute leaf margins, and subquadraie alar cells. Fig. 5f-h.