[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875
     Family Coccodiscidae Haeckel, 1862
       Genus †Periphaena Ehrenberg, 1873
         1 †Periphaena decora Ehrenberg, 1873
         2 †Periphaena delta Sanfilippo & Riedel, 1973
         3 †Periphaena dupla (Kozlova, 1966)
         4 †Periphaena heliasteriscus (Clark & Campbell, 1942)
         5 †Periphaena triactis (Ehrenberg)
         6 †Periphaena tripyramis (Haeckel, 1887)