| Parent | Category | Figures | |
|---|---|---|---|
| 1 | Cyclocardia | borealis | 9 |
| 2 | Cyclocardia | crebricostata | 6 |
| 3 | Cyclocardia | nipponensis | 3 |
| 4 | Cyclocardia | ferruginea | 2 |
| 5 | Cyclocardia | gouldii | 2 |
| 6 | Cyclocardia | velutinus | 2 |
| 7 | Cyclocardia | astartoides | 2 |
| 8 | Cyclocardia | novangliae | 1 |
| 9 | Cyclocardia | spurca | 1 |
| 10 | Cyclocardia | ventricosa | 1 |
| 11 | Cyclocardia | monodi | 1 |
| 12 | Cyclocardia | crassidens | 1 |