Dodatak:Popis mekušaca, Ob
Oba
uredi- Obanella
Obe
uredi- Obesotoma
- Obesula
- Obexomia
Obl
uredi- Obliquaria
Obo
uredi- Obovaria haddletoni (Athearn 1964)
- Obovaria jacksoniana (Frierson 1912)
- Obovaria olivaria (Rafinesque 1820)
- Obovaria retusa (Lamarck 1819)
- Obovaria subrotunda (Rafinesque 1820)
- Obovaria unicolor (Lea 1845)
Mollusca → Bivalvia → Unionoida → Unionoidea → Unionidae → Lampsilini
Obr
uredi- Obrussena
Obs
uredi- Obstengenia
Obt
uredi- Obtellina
- Obtusella