Subclass [Bryidae] Engl. (1892) - mosses
   Superorder Hypnanae W.R.Buck & Goffinet ex W.R. Buck, C.J. Cox, A.J. Shaw & Goffinet (2005)
     Order Hookeriales M. Fleisch.
       Family Pilotrichaceae Kindb.
         Subfamily Hypnelloideae
           Genus Callicostella (Müll.Hal.) Mitt. (1859) - callicostella moss
             Callicostella diatomophila (Müll.Hal., 1898) Fleischer (1922) see Diploneuron diatomophilum (Müll.Hal., 1898) W.R.Buck et al. (2005)