| Parent | Category | Figures | |
|---|---|---|---|
| 1 | Petaloconchus | varians | 21 |
| 2 | Petaloconchus | renisectus | 9 |
| 3 | Petaloconchus | montereyensis | 3 |
| 4 | Petaloconchus | keenae | 2 |
| 5 | Petaloconchus | compactus | 1 |
| 6 | Petaloconchus | caperatus | 1 |
| 7 | Petaloconchus | complicatus | 1 |
| 8 | Petaloconchus | erectus | 1 |
| 9 | Petaloconchus | species | 1 |
| 10 | Petaloconchus | roussaei | 1 |