Opinions from I. Hayami 1975
- 'Agapella belongs to Arcticidae'
- 'Amussium (Entolium) was reranked as Entolium and belongs to Entoliidae'
- 'Anthonya belongs to Crassatellidae'
- 'Astarte (Coelastarte) was reranked as Coelastarte and belongs to Astartidae'
- 'Astarte iwayai belongs to Astarte' according to Ichikawa 1954
- 'Bositra belongs to Posidoniidae'
- 'Burmesia belongs to Burmesiidae'
- 'Cardinioides belongs to Pachycardiidae'
- 'Catinula belongs to Ostreidae'
- 'Costocyrena belongs to Neomiodontidae'
- 'Crenotrapezium belongs to Neomiodontidae'
- 'Cucullaea transversa belongs to Cucullaea' according to Nagao 1934
- 'Daonella belongs to Posidoniidae'
- 'Eoursivivas belongs to Corbulidae'
- 'Eumorphotis belongs to Aviculopectinidae'
- 'Exogyrinae belongs to Ostreidae'
- 'Filosina belongs to Corbiculidae'
- 'Frenguelliella belongs to Trigoniidae'
- 'Geratrigonia belongs to Trigoniidae'
- 'Gervillaria belongs to Bakevelliidae'
- 'Gruenewaldia belongs to Myophoriidae'
- 'Halobia belongs to Posidoniidae'
- 'Ibotrigonia belongs to Trigoniidae'
- 'Isodomella belongs to Neomiodontidae'
- 'Izumia belongs to Arcticidae'
- 'Latitrigonia belongs to Trigoniidae'
- 'Lecompteus belongs to Mytilidae'
- 'Luciniola belongs to Lucinidae'
- 'Ludbrookia belongs to Carditidae'
- 'Meekia belongs to Tancrediidae'
- 'Megatrigonia (Apiotrigonia) was reranked as Apiotrigonia and belongs to Trigoniidae'
- 'Mesolinga belongs to Lucinidae'
- 'Micronectes belongs to Pectinidae'
- 'Microtrigonia belongs to Trigoniidae'
- 'Minetrigonia belongs to Trigoniidae'
- 'Monotis belongs to Monotidae'
- 'Mya plicata belongs to Mya' according to Sowerby 1829
- 'Mya plicata is recombined as Panopea (Myopsis) plicata'
- 'Myophoria (Costatoria) was reranked as Costatoria and belongs to Myophoriidae'
- 'Myopsis was reranked as Panopea (Myopsis) and belongs to Panopea'
- 'Myrene belongs to Neomiodontidae'
- 'Mysidioptera belongs to Limidae'
- 'Nagaoella belongs to Veneridae'
- 'Nakamuranaia belongs to Unionoida'
- 'Neoburmesia belongs to Pholadomyidae'
- 'Neomiodon belongs to Neomiodontidae'
- 'Neomiodontidae belongs to Veneroida'
- 'Nipponicorbula belongs to Corbulidae'
- 'Nipponitrigonia belongs to Trigoniidae'
- 'Nippononaia belongs to Trigonioididae'
- 'Pachycardiidae belongs to Unionoida'
- 'Palaeopharus belongs to Actinodontophoridae'
- 'Palaeopharus (Minepharus) was reranked as Minepharus and belongs to Cardiniidae'
- 'Panopea (Myopsis) nagaoi belongs to Panopea (Myopsis)' according to Hayami 1966
- 'Panopea (Myopsis) nagaoi belongs to Panopea (Myopsis)'
- 'Paranodonta belongs to Unionidae'
- 'Pectinacea belongs to Pterioida'
- 'Pectinidae belongs to Pectinacea'
- 'Pleurogrammatodon belongs to Parallelodontidae'
- 'Pleuronectites belongs to Pectinidae'
- 'Plicatounio belongs to Unionidae'
- 'Portlandia belongs to Nuculanidae'
- 'Praecaprotina belongs to Caprotinidae'
- 'Praeconia belongs to Astartidae'
- 'Prohinnites belongs to Pectinidae'
- 'Protocyprina belongs to Neomiodontidae'
- 'Pseudamiantis belongs to Veneridae'
- 'Pseudasaphis belongs to Neomiodontidae'
- 'Pseudomytiloides belongs to Inoceramidae'
- 'Ptychomya belongs to Ptychomyidae'
- 'Pulsidis belongs to Corbulidae'
- 'Radulonectites belongs to Pectinidae'
- 'Radulopecten belongs to Pectinidae'
- 'Sakawanella belongs to Tancrediidae'
- 'Scaphotrigonia belongs to Trigoniidae'
- 'Scittila belongs to Icanotiidae'
- 'Shistodesmus belongs to Unionidae'
- 'Somapecten belongs to Entoliidae'
- 'Somarctica belongs to Arcticidae'
- 'Steinmanella belongs to Trigoniidae'
- 'Streblochondria belongs to Aviculopectinidae'
- 'Tenea belongs to Veneridae'
- 'Tetoria belongs to Corbiculidae'
- 'Tetorimya belongs to Pholadomyidae'
- 'Toucasia belongs to Requieniidae'
- 'Triaphorus belongs to Permophoridae'
- 'Trigonia (Prosogyrotrigonia) was reranked as Prosogyrotrigonia and belongs to Trigoniidae'
- 'Trigonioides belongs to Trigonioididae'
- 'Trigonioididae belongs to Unionoida'
- 'Trigonodus belongs to Pachycardiidae'
- 'Waagenoperna belongs to Isognomonidae'
- 'Weyla (Tosapecten) was reranked as Tosapecten and belongs to Pectinidae'
- 'Xenocardita belongs to Carditidae'
- 'Yoldia belongs to Nuculanidae'