Emplectonematidae
Emplectonema bocki Brunberg, 1957
Emplectonema bonhourei (Joubin, 1904)
Emplectonema buergeri Coe, 1901
Emplectonema burgeri
Emplectonema derjugini Ushakov, 1928
Emplectonema duoni (Joubin, 1890)
Emplectonema echinoderma (Marion, 1873)
Emplectonema flavens (Bürger, 1896)
Emplectonema francisca (Joubin & François, 1892)
Emplectonema friederichi Sánchez, 1973
Emplectonema giganteum (Verrill, 1873)
Emplectonema gracile (Johnston, 1837)
Emplectonema intestinalis Friedrich, 1958
Emplectonema kandai Kato, 1939
Emplectonema marioni (Hubrecht, 1879)
Emplectonema mitsuii Yamaoka, 1947
Emplectonema neesii (Örsted, 1843)
Emplectonema nordgaardi (Punnett, 1903)
Emplectonema ophiocephala (Schmarda, 1859)
Emplectonema osceolai Corrêa, 1961
Emplectonema purpuratum Coe, 1905
Emplectonema quatrefagei (Rochebrune, 1881)
Emplectonema rubea Korotkevich, 1977
Emplectonema spongicola (Bergendal, 1903)
Emplectonema violaceum (Bürger, 1896)