Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Orbiliomycetes O.E. Erikss. & Baral (2003) [monotypic]
       Order Orbiliales Baral, O.E. Erikss., G. Marson & E. Weber (2003) [monotypic]
         Family Orbiliaceae Nannf. (1932)
           01 Genus Arthrobotrys Corda (1839)
           02 Genus Dactylella Grove (1884)
           03 Genus Dactylellina M. Morelet (1968)
           04 Genus Drechslerella Subram. (1964)
           05 Genus Gamsylella M. Scholler, Hagedorn & A. Rubner (1999)
           06 Genus Helicoön Morgan (1892)
           07 Genus Hyalorbilia Baral & G. Marson (2001)
           08 Genus Lecophagus M.W. Dick (1990)
           09 Genus Orbilia Fr. (1836)
           10 Genus Pseudorbilia Y. Zhang bis, Z.F. Yu, Baral & K.Q. Zhang (2007)
           11 Genus Pseudotripoconidium Z.F. Yu & K.Q. Zhang (2011)
           12 Genus Retiarius D.L. Olivier (1978)
           13 Genus Vermispora Deighton & Piroz. (1972)