| Parent | Category | Figures | |
|---|---|---|---|
| 1 | Arcidae | Anadara | 1370 |
| 2 | Arcidae | Barbatia | 1129 |
| 3 | Arcidae | Arca | 832 |
| 4 | Arcidae | Acar | 328 |
| 5 | Arcidae | Trisidos | 252 |
| 6 | Arcidae | Lunarca | 218 |
| 7 | Arcidae | Tegillarca | 157 |
| 8 | Arcidae | Bathyarca | 110 |
| 9 | Arcidae | Bentharca | 94 |
| 10 | Arcidae | Senilia | 82 |
| 11 | Arcidae | Hawaiarca | 75 |
| 12 | Arcidae | Calloarca | 59 |
| 13 | Arcidae | Asperarca | 32 |
| 14 | Arcidae | Deltaodon | 32 |
| 15 | Arcidae | Mosambicarca | 22 |
| 16 | Arcidae | Samacar | 13 |
| 17 | Arcidae | Mesocibota | 4 |
| 18 | Arcidae | Fugleria | 3 |
| 19 | Arcidae | Larkinia | 1 |
| 20 | Arcidae | Mimarcaria | 1 |