Contributed by Andrew Smith, July 2011
| Name gender | feminine |
|---|---|
| Type | Cassidulus conoideus Clark, by original designation. |
| Classification and/or Status | non Walcott, 1908. Nomen null. Error pro Clarkiella Lambert, 1916 |
| Remarks | Lambert, J. 1918. Considérations sur la classification des échinides atelostomes. Mémoires de la Société académique de l’Aube, (3) 82, 9-54. |