Cycladamsia seminuda (C. B. Adams, 1851) | 
Cycladamsia seminuda deburghaeanus (Chitty, 1857) | 
Cycladamsia seminuda scabratum (Bartsch, 1942) |
Cyclobakeria notatior (Chitty, 1857) | 
Cyclobakeria novaespei (Chitty, 1857) | 
Cyclobakeria welchi (Bartsch, 1942) |
Cyclochittya dentistigmata (Chitty, 1857) | 
Cyclojamaicia bondi (Vanatta, 1936) | 
Cyclojamaicia suturalis (G. B. Sowerby I, 1843) |
Cyclopilsbrya caribaea (Clench & Aguayo, 1935) | 
Cyclopilsbrya rupisfontis (Chitty, 1857) | 
Cyclopilsbrya westmorelandensis (Chitty, 1857) |
Cyclovendreysia dubiosa (C. B. Adams, 1851) | 
Poteria adamsi (Bartsch, 1942) | 
Poteria clappi (Bartsch, 1942) |
Poteria corrugata (Menke, 1829) | 
Poteria gossei (Bartsch, 1942) | 
Poteria lineata cycloata (Chitty, 1857) |
Poteria martensi (Kobelt, 1912) | 
Poteria montegoensis (Bartsch, 1942) | 
Poteria pallescens (C. B. Adams, 1851) |
Poteria senex (Bartsch, 1942) | 
Poteria varians (C. B. Adams, 1851) | 
Poteria varians portlandensis (Chitty, 1857) |
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