Opinions from A. Dhondt 1971
- 'Amusium sulcatellum belongs to Amusium' according to Stoliczka 1871
- 'Amusium sulcatellum is a subjective synonym of Entolium orbiculare'
- 'Amussium (Parvamussium) belongs to Amussium' according to Sacco 1897
- 'Chlamys suborbicularis belongs to Chlamys' according to Cayeux 1958
- 'Chlamys suborbicularis is a subjective synonym of Entolium orbiculare'
- 'Pecten opercularis is a subjective synonym of Entolium orbiculare'
- 'Pecten (Amusium) balticus belongs to Pecten (Amusium)' according to Dames 1874
- 'Pecten (Amusium) balticus is a subjective synonym of Entolium orbiculare'
- 'Pecten (Amusium) orbicularis belongs to Pecten (Amusium)' according to Sowerby 1874
- 'Pecten (Amusium) orbicularis is a subjective synonym of Entolium orbiculare'
- 'Pecten (Entolium) membranaceus belongs to Pecten (Entolium)' according to Wanderer 1909
- 'Pecten (Entolium) membranaceus is a subjective synonym of Entolium orbiculare'
- 'Pecten (Entolium) nilssoni belongs to Pecten (Entolium)' according to Wanderer 1909
- 'Pecten (Entolium) nilssoni is a subjective synonym of Entolium orbiculare'
- 'Pecten (Entolium) pusillulus belongs to Pecten (Entolium)' according to Griepenkerl 1889
- 'Pecten (Entolium) pusillulus is a subjective synonym of Syncyclonema haggi'
- 'Pecten (Syncyclonema) orbicularis belongs to Pecten (Syncyclonema)' according to Sowerby 1902
- 'Pecten (Syncyclonema) orbicularis is a subjective synonym of Entolium orbiculare'
- 'Pecten (Entolium) balticus is a subjective synonym of Entolium orbiculare'
- 'Pecten balticus belongs to Pecten' according to Dames 1885
- 'Pecten calypso is a subjective synonym of Entolium orbiculare' according to Orbigny 1850
- 'Pecten circularis is a subjective synonym of Entolium orbiculare'
- 'Pecten cretaceus belongs to Pecten' according to Nyst 1843
- 'Pecten cretaceus is recombined as Syncyclonema cretacea'
- 'Pecten cretaceus is recombined as Pecten (Syncyclonema) cretaceus' according to Ravn 1921
- 'Pecten darius belongs to Pecten' according to Orbigny 1882
- 'Pecten darius is a subjective synonym of Entolium orbiculare'
- 'Pecten fragilis belongs to Pecten' according to Defrance 1825
- 'Pecten fragilis is a subjective synonym of Entolium membranaceum'
- 'Pecten germanicus belongs to Pecten' according to Wollemann 1900
- 'Pecten germanicus is a subjective synonym of Entolium orbiculare'
- 'Pecten greppini belongs to Pecten' according to Pictet and Renevier 1858
- 'Pecten greppini is recombined as Syncyclonema greppini'
- 'Pecten halli belongs to Pecten' according to Gabb 1861
- 'Pecten inversus is recombined as Pecten (Amusium) inversus' according to Griepenkerl 1889
- 'Pecten inversus is recombined as Amussium inversum' according to Reis 1896
- 'Pecten inversus belongs to Pecten' according to Nilsson 1827
- 'Pecten inversus is recombined as Propeamussium (Parvamussium) inversum'
- 'Pecten laevis is replaced by Syncyclonema haggi'
- 'Pecten laminosus belongs to Pecten' according to Mantell 1822
- 'Pecten laminosus is a subjective synonym of Entolium orbiculare'
- 'Pecten latus belongs to Pecten' according to Hagenow 1842
- 'Pecten latus is a subjective synonym of Entolium membranaceum'
- 'Pecten losseriensis belongs to Pecten' according to Vogel 1900
- 'Pecten losseriensis is a subjective synonym of Entolium orbiculare'
- 'Pecten membranaceus belongs to Pecten' according to Nilsson 1827
- 'Pecten membranaceus is recombined as Entolium membranaceum'
- 'Pecten membranaceus is recombined as Pecten (Syncyclonema) membranaceus' according to Woods 1917
- 'Pecten neptuni belongs to Pecten' according to Orbigny 1850
- 'Pecten neptuni is a subjective synonym of Entolium orbiculare'
- 'Pecten nilsoni is recombined as Pecten (Syncyclonema) nilssoni' according to Wolansky 1932
- 'Pecten orbicularis is recombined as Syncyclonema orbiculare' according to Wright 1942
- 'Pecten orbicularis is recombined as Entolium orbiculare'
- 'Pecten plemonectes is a subjective synonym of Entolium membranaceum'
- 'Pecten plemonectes belongs to Pecten' according to Faujas 1799
- 'Pecten pleuronectes belongs to Pecten' according to Faujas 1799
- 'Pecten pleuronectes is a subjective synonym of Entolium membranaceum'
- 'Pecten rigida belongs to Pecten' according to Hall and Meek 1856
- 'Pecten semiplicatus belongs to Pecten' according to Alth 1850
- 'Pecten semiplicatus is recombined as Syncyclonema semiplicata'
- 'Pecten spathulatus is a subjective synonym of Syncyclonema nilsoni'
- 'Pecten squamula is a subjective synonym of Propeamussium (Parvamussium) inversum'
- 'Pecten sublaminosus belongs to Pecten' according to Favre 1869
- 'Pecten sublaminosus is a subjective synonym of Entolium orbiculare'
- 'Pecten subsquamula belongs to Pecten' according to Orbigny 1850
- 'Pecten subsquamula is a subjective synonym of Propeamussium (Parvamussium) inversum'
- 'Syncyclonema belongs to Chlamydinae'
- 'Syncyclonema gamsensis belongs to Syncyclonema'
- 'Syncyclonema hagenowi belongs to Syncyclonema'
- 'Syncyclonema haldonensis belongs to Syncyclonema' according to Woods 1902
- 'Syncyclonema sublaminosa belongs to Syncyclonema' according to Favre 1869
- 'Syncyclonema sublaminosa is a subjective synonym of Entolium orbiculare'