[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Nassellaria Ehrenberg, 1875 see Class Nassellaria Ehrenberg, 1847
     Family Artostrobiidae Riedel, 1967
       Genus Phormostichoartus Campbell, 1951
         01 †Phormostichoartus caryoforma (Caulet, 1979)
         02 Phormostichoartus corbula (Harting, 1863)
         03 †Phormostichoartus crustula (Caulet, 1979)
         04 †Phormostichoartus doliolum Riedel & Sanfilippo, 1971
         05 †Phormostichoartus fistula Nigrini, 1977
         06 Phormostichoartus furcaspiculata (Popofsky, 1913)
         07 †Phormostichoartus marylandicus (Martin, 1904)
         08 †Phormostichoartus multiseriatus (Ehrenberg, 1860)
         09 †Phormostichoartus pitomorphus Caulet, 1986
         10 Phormostichoartus platycephala (Ehrenberg, 1872)
         11 †Phormostichoartus schneideri Nigrini & Caulet, 1992
         12 †Phormostichoartus strongi Hollis, 1997