Class Ophiuroidea Norman 1865 

 Subclass *Aegophiuricia Matsumoto 1915 

 Order *Lysoi)hiiirida Matsumoto 1913 

 Subclass Myophiurida Matsumoto 1915 

 Order *Opbiocystiida H. L. Clark 1939 

 Order *Aganasterida H. L. Clark 1939 

 Order Phrynophiurida Matsumoto 1915 

 Order Laemophiurida Matsumoto 1915 

 Order Gnathophiurida Matsumoto 1915 

 Order Chilophiurida Matsumoto 1915 

 Subphylum Echinozoa Leuckart 1848 

 Class Echinoidea Bronn 1860 

 Order *Bothriocidaroida Duncan 1889 

 Order Cidaroida Duncan 1889 

 Order Centrechinoida Jackson 1912 

 Suborder Aulodonta Jackson 1912 

 Suborder Stirodonta Jackson 1912 

 Suborder Camerodonta Jackson 1912 

 Order Exocycloida Jackson 1912 

 Suborder Holectypina Gregory 1900 

 Suborder Echinoneina Hawkins 1925 

 Suborder Clypeastrina Gregory 1900 

 Suborder Nucleolitina Hawkins 1925 

 Suborder Cassidulina Hawkins 1925 

 Suborder Urechinina H. L. Clark 1925 

 Suborder Spatangina Jackson 1912 

 Order Perischoechinoida Jackson 1912 

 Order Echinocystoida Jackson 1912 

 Order Perichoechinoida Jackson 1912 

 Class Holothurioidea Semper 1868 

 Order Dendrochirota MacBride 1909 

 Order Elasipoda Theele 1882 

 Order Aspidochirota MacBride 1909 

 Order Molpadonia Ekman 1925 

 Order Apoda Lanipert 1885 

 Phylum Priapuloidea Sedgwick 1898 

 Phylum Annelida Lamarck 1809 

 Class Archiannelida Hatschek 1893 

 Class Polychaeta Grube 1850 

 Order Errantia Audouin & Milne-Edwards 1832 

 Order Sedentaria Lamarck 1818 

 Order Aplacophora von Ihreing (see page 17) 1878 

 Order *Miskoa Walcott 1911 

 Class Myzostoma Graff 1884 

 Class Oligochaeta Grube 1850 

 Order Plesiopora plesiotheca Michaelsen 1930 

 Order Plesiopora prosotheca Michaelsen 1930 

 Order Prosopora Michaelsen 1930 

 Order Opisthopora Michaelsen 1930 

 Class Hirudinea Lamarck 1818 



Order Rhynchobdellida Blanchard 1887 

 Order Gnathobdellida Vaillant 1890 



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