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Responsible specialists per family in Mollusca – Bivalvia.
| TAXONOMY | EUROPE | |||
| FAMILY | SPECIALIST(S) | DATABASED SPECIES (Fauna Europaea) | TOTAL DESCRIBED SPECIES (information-gap) | TOTAL ESTIMATED SPECIES (knowledge-gap) |
| Corbiculidae | Rafael Araujo | 2 | 2 | 2 |
| Dreissenidae | Rafael Araujo | 5 | 7 | 7–10 |
| Margaritiferidae | Rafael Araujo | 2 | 2 | 2 |
| Sphaeriidae | Rafael Araujo | 30 | 34 | 35–40 |
| Unionidae | Rafael Araujo | 16 | 19 | 19–25 |
