Kingdom Fungi R.T.Moore (1980) - fungi
   Phylum Mucoromycota Doweld (2001)
     Subphylum Mucoromycotina Benny (2007)
       Class Mucoromycetes Doweld (2001) [monotypic]
         Order Mucorales Nees (1817)
           Family Syncephalastraceae Naumov ex R.K. Benj. (1959)
             1 Genus Circinella Tiegh. & G. Le Monn. (1873)
             2 Genus Fennellomyces Benny & R.K. Benj. (1975)
             3 Genus Phascolomyces Boedijn ex Benny & R.K. Benj. (1976) [monotypic]
             4 Genus Protomycocladus Schipper & Samson (1994) [monotypic]
             5 Genus Syncephalastrum J.Schröt. (1886)
             6 Genus Thamnostylum Arx & H.P. Upadhyay (1970)
             7 Genus Zychaea Benny & R.K. Benj. (1975) [monotypic]