Phylum †Proarticulata Fedonkin, 1985
Status: fossil
   1 Class †Vendiamorpha Fedonkin, 1985
  Status: fossil
   2 Class †Dipleurozoa Harrington & Moore, 1956 [monotypic]
  Status: fossil
   3 Class †Cephalozoa Ivantsov, 2004
  Status: fossil