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)
             Genus Thamnostylum Arx & H.P. Upadhyay (1970)
               Thamnostylum piriformeᵀ (Bainier) Arx & H.P. Upadhyay (1970)