Table 1.
Nucleotide and protein sequences belonging to all orders of the Bivalvia class.
| Subclass | Order | Superfamily | Family | Genus | Nucleotide | Protein |
| Anomalodesmata | Pholadomyoida | 87 | 16 | |||
| Heteroconchia | Myoida | 188 | 39 | |||
| Myoidea | Myidae | Mya | 40 | 13 | ||
| Hiatelloidea | Hiatellidae | Panopea | 24 | 0 | ||
| Heteroconchia | Veneroida | 19,585 | 1,038 | |||
| Cardioidea | Cardiidae | Cerastoderma | 192 | 8 | ||
| Solenoidea | Pharidae | Ensis | 196 | 9 | ||
| Solenoidea | Solenidae | Solen | 37 | 3 | ||
| Mactroidea | Mactridae | Lutraria | 3 | 0 | ||
| Mactroidea | Mactridae | Spisula | 212 | 31 | ||
| Veneroidea | Veneridae | Mercenaria | 195 | 16 | ||
| Veneroidea | Veneridae | Venerupis | 10,632 | 124 | ||
| Veneroidea | Veneridae | Venus | 18 | 6 | ||
| Palaeoheterodonta | Trigonioida | 11 | 2 | |||
| Unionoida | 7,417 | 975 | ||||
| Protobranchia | Nuculoida | 164 | 39 | |||
| Solemyoida | 35 | 6 | ||||
| Pteriomorphia | Arcoida | 613 | 168 | |||
| Arcoidea | Arcidae | All genera | 439 | 145 | ||
| Arcoidea | Glycymerididae | Glycymeris | 20 | 4 | ||
| Limoida | 146 | 31 | ||||
| Mytiloida | Mytiloidea | Mytilidae | All genera | 57,871 | 1,630 | |
| Ostreoida | 46,668 | 799 | ||||
| Ostreoidea | Ostreidae | Ostrea | 274 | 33 | ||
| Ostreoidea | Ostreidae | Crassostrea | 45,963 | 726 | ||
| Pectinoida | 17,456 | 417 | ||||
| Pterioida | 1,051 | 174 | ||||
| Total | 151,292 | 5,334 | ||||
Data available from public databases at December 2008 (EMBL Release 97; UniprotKB Release 14.6). The table is expanded until the genus level only for the most important commercial bivalvia species. The total number of nucleotide and protein sequences for each order is indicated in bold.