Opinions from J. D. Dana 1849
- 'Allorisma audax is recombined as Pholadomya (Homomya) audax'
- 'Allorisma curvatum is recombined as Pholadomya (Homomya) curvata'
- 'Astarte gemma belongs to Astarte'
- 'Astartila corpulenta belongs to Astartila'
- 'Astartila cyclas belongs to Astartila'
- 'Astartila cyprina belongs to Astartila'
- 'Astartila cytherea belongs to Astartila'
- 'Astartila intrepida belongs to Astartila'
- 'Astartila polita belongs to Astartila'
- 'Astartila transversa belongs to Astartila'
- 'Bellerophon micromphalus belongs to Bellerophon'
- 'Bellerophon strictus belongs to Bellerophon'
- 'Cardinia cuneata belongs to Cardinia'
- 'Cardinia recta belongs to Cardinia'
- 'Cardium ferox belongs to Cardium'
- 'Chaetetes gracilis is recombined as Chetetes gracilis'
- 'Cleobis gracilis is recombined as Maeonia gracilis'
- 'Cleobis grandis is recombined as Maeonia grandis'
- 'Cleobis recta is recombined as Maeonia recta'
- 'Conularia inornata belongs to Conularia'
- 'Conularia levigata belongs to Conularia'
- 'Conularia tenuistriata belongs to Conularia'
- 'Cypricardia rugulosa is a subjective synonym of Maeonia carinata'
- 'Cypricardia veneris belongs to Cypricardia'
- 'Eurydesma cordata belongs to Eurydesma'
- 'Eurydesma elliptica belongs to Eurydesma'
- 'Eurydesma globosa belongs to Eurydesma'
- 'Fenestella gracilis belongs to Fenestella'
- 'Fenestella media belongs to Fenestella'
- 'Homomya was reranked as Pholadomya (Homomya) and belongs to Pholadomya'
- 'Lingula ovata belongs to Lingula'
- 'Maeonia axinia belongs to Maeonia'
- 'Maeonia fragilis belongs to Maeonia'
- 'Megadesmus antiquatus is recombined as Pachydomus antiquatus'
- 'Megadesmus cuneatus is recombined as Pachydomus cuneatus'
- 'Megadesmus laevis is recombined as Pachydomus levis'
- 'Modiolopsis acutifrons is recombined as Cypricardia acutifrons'
- 'Modiolopsis arcodes is recombined as Cypricardia arcodes'
- 'Modiolopsis imbricata is recombined as Cypricardia imbricata'
- 'Modiolopsis praerupta is recombined as Cypricardia praerupta'
- 'Modiolopsis siliqua is recombined as Cypricardia siliqua'
- 'Modiolopsis simplex is recombined as Cypricardia simplex'
- 'Myonia [misspelled as Maeonia] belongs to Bivalvia'
- 'Myonia elongata is recombined as Maeonia elongata'
- 'Myonia valida is recombined as Maeonia valida'
- 'Nucula abrupta belongs to Nucula'
- 'Nucula concinna belongs to Nucula'
- 'Orthonota costata is recombined as Cardinia costata'
- 'Pachydomus carinatus is recombined as Maeonia carinata'
- 'Pachydomus gigas is recombined as Maeonia gigas'
- 'Pachydomus sacculus is recombined as Eurydesma sacculus'
- 'Patella tenella is recombined as Pileopsis tenella'
- 'Pecten comptus belongs to Pecten'
- 'Pecten illawarensis is corrected as Pecten illawarrensis and belongs to Pecten'
- 'Pecten leniusculus belongs to Pecten'
- 'Pecten squamuliferus belongs to Pecten'
- 'Pecten tenuicollis belongs to Pecten'
- 'Pentadia corona belongs to Pentadia'
- 'Pholadomya (Homomya) glendonensis belongs to Pholadomya (Homomya)'
- 'Pholadomya undata belongs to Pholadomya'
- 'Platyschisma depressum belongs to Platyschisma'
- 'Platyschisma rotundatum belongs to Platyschisma'
- 'Pleurotomaria nuda belongs to Pleurotomaria'
- 'Pleurotomaria strzeleckiana belongs to Pleurotomaria'
- 'Productus brachythaerus belongs to Productus'
- 'Productus fragilis belongs to Productus'
- 'Psammobia was reranked as Solecurtus (Psammobia) and belongs to Solecurtus'
- 'Pterinea macroptera belongs to Pterinea'
- 'Pyramus ellipticus is recombined as Maeonia elliptica'
- 'Pyramus myiformis is recombined as Maeonia myiformis'
- 'Siphonotreta curta belongs to Siphonotreta'
- 'Solen (Solecurtus) ellipticus is recombined as Solecurtus ellipticus'
- 'Solen (Solecurtus) planulatus is recombined as Solecurtus (Psammobia) planulatus'
- 'Spirifer darwinii belongs to Spirifer'
- 'Spirifer phalaena belongs to Spirifer'
- 'Spirifera duodecimcostata is recombined as Spirifer duodecimcostatus'
- 'Stenopora crinita is recombined as Chaetetes crinita'
- 'Stenopora ovata is recombined as Chaetetes ovata'
- 'Stenopora tasmaniensis is recombined as Chaetetes tasmaniensis'
- 'Terebratula amygdala belongs to Terebratula'
- 'Theca lanceolata belongs to Theca'
- 'Trochus oculus is recombined as Platyschisma ocula'