Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Leotiomycetes O.E. Erikss. & Winka (1997)
       Order Helotiales Nannf. (1932)
         Family Leptodontidiaceae Hern.-Restr., Crous & Gené (2017) [monotypic]
           1 Genus Leptodontidium de Hoog (1979)