• Echinocyamus angulosus Lütken, 1856 accepted as Echinocyamus pusillus (O.F. Müller, 1776)
• Echinocyamus apicatus Mortensen, 1948
• Echinocyamus australis (Des Moulins, 1835-37)
• Echinocyamus convergens Mortensen, 1948
• Echinocyamus craniolaris (Gray, 1872) accepted as Fibularia ovulum Lamarck, 1816
• Echinocyamus crenulatus H.L. Clark, 1925 accepted as Heliophora orbiculus (Linnaeus, 1758)
• Echinocyamus cribellum (de Meijere, 1903) accepted as Fibularia cribellum de Meijere, 1903
• Echinocyamus crispus Mazzetti, 1893
• Echinocyamus elegans Mazzetti, 1893
• Echinocyamus elongatus H.L. Clark, 1925 accepted as Echinocyamus crispus Mazzetti, 1893
• Echinocyamus grandiporus Mortensen, 1907
• Echinocyamus grandis H.L. Clark, 1925 accepted as Echinocyamus crispus Mazzetti, 1893
• Echinocyamus incertus H.L. Clark, 1914
• Echinocyamus insularis Mironov & Sagaidachny, 1984
• Echinocyamus macrostomus Mortensen, 1907
• Echinocyamus megapetalus H.L. Clark, 1914
• Echinocyamus minimus Girard, 1850 accepted as Echinocyamus pusillus (O.F. Müller, 1776)
• Echinocyamus minutus (Gmelin, 1788) accepted as Echinocyamus pusillus (O.F. Müller, 1776)
• Echinocyamus nutriens (H.L. Clark, 1909) accepted as Fibularia nutriens H.L. Clark, 1909
• Echinocyamus ovulum (Lamarck, 1816) accepted as Fibularia ovulum Lamarck, 1816
• Echinocyamus parthenopaeus Costa, 1869 accepted as Echinocyamus pusillus (O.F. Müller, 1776)
• Echinocyamus planissimus H.L. Clark, 1938
• Echinocyamus platytatus H.L. Clark, 1914
• Echinocyamus polyporus Mortensen, 1921
• Echinocyamus provectus de Meijere, 1903
• Echinocyamus pusillus (O.F. Müller, 1776)
• Echinocyamus pyriforma Agassiz
• Echinocyamus scaber de Meijere, 1903
• Echinocyamus sollers Koehler, 1922
• Echinocyamus speciosus Costa, 1869 accepted as Echinocyamus pusillus (O.F. Müller, 1776)
• Echinocyamus tarentinus (Lamarck, 1816) accepted as Echinocyamus pusillus (O.F. Müller, 1776)
• Echinocyamus terminalis Grant & Hertlein, 1938 accepted as Dendraster terminalis (Grant & Hertlein, 1938)
• Echinocyamus volva (L. Agassiz & Desor, 1846) accepted as Fibularia volva L. Agassiz & Desor, 1846
• Mortonia apicatus (Mortensen, 1948)
• Mortonia australis (Desmoulins, 1837)
• Mortonia polyporus (Mortensen, 1921)
• Mortonia terminalis (Grant & Hertlein, 1938) accepted as Dendraster terminalis (Grant & Hertlein, 1938)