Figure 13. Schematic representation of the characteres used by Haeckel (1887) for the classification of the Sphaeroidea. 1: Ethmosphaerida; 2: Xiphostylida; 3: Staurostylida; 4: Hexastylida; 5: Coscinommida; 6: Carposphaerida; 7: Sphaerostylida; 8: Staurolonchida; 9: Hexalonchida; 10: Haliommida; 11: Thecosphaerida; 12: Amphistylida; 13: Stauracontida; 14: Hexacontida; 15: Actinommida; 16: Cromyosphaerida; 17: Cromyostylida; 18: Staurocromyda; 19: Hexacromyida; 20: Cromyommida; 21: Caryosphaerida; 22: Caryostylida; 23: Staurocaryda; 24: Hexacaryda; 25: Caryommida; 26: Plegmosphaerida; 27: Spongostylida; 28: Staurodorida; 29: Hexadorida; 30: Spongiommida.