"Heterococcoliths"
   "Placoliths"
     Order †Podorhabdales Rood et al. (1971)
       Family †Axopodorhabdaceae (Bown & Young, 1997)
         Genus †Axopodorhabdus F.H. Wind & S.W. Wise, in S.W. Wise & F.H. Wind (1977)
         Genus †Cleistorhabdus Black (1972)
         ?Genus †Cribrocorona Perch-Nielsen (1973)
         ?Genus †Cribrosphaerella Deflandre, in Piveteau (1952)
         Genus †Dekapodorhabdus Medd (1979)
         Genus †Dodekapodorhabdus Perch-Nielsen (1968)
         Genus †Ethmorhabdus Noel (1965)
         Genus †Hemipodorhabdus M. Black (1971)
         Genus †Hexapodorhabdus Noel (1965)
         ?Genus †Nephrolithus Górka (1957)
         Genus †Octocyclus M. Black (1972)
         Genus †Octopodorhabdus Noël (1965)
         Genus †Perrisocyclus Black (1971)
         Genus †Teichorhabdus F.H. Wind & S.W. Wise, in S.W. Wise & F.H. Wind (1977)
         Genus †Tetrapodorhabdus M. Black (1971)