Opinions from F. Frech 1912
- 'Amussium (Entolium) was reranked as Pecten (Entolium) and belongs to Pecten'
- 'Arca juttensis is recombined as Macrodon juttensis'
- 'Athyris goniocolpos belongs to Athyris'
- 'Avicula laczkoi belongs to Avicula'
- 'Cardita pichleri belongs to Cardita'
- 'Cardium triquetrum is recombined as Megalodus triqueter'
- 'Cassianella ampezzana belongs to Cassianella'
- 'Ceromya aequilateralis is recombined as Corbis aequilateralis' according to Stoppani 1900
- 'Ceromya aequilateralis is recombined as Mysidia aequilateralis'
- 'Coelopis was reranked as Opis (Coelopis) and belongs to Opis'
- 'Conchodon is corrected as Conchodus and belongs to Bivalvia'
- 'Conchodus hungaricus belongs to Conchodus' according to Hoernes 1912
- 'Conchodus hungaricus is recombined as Lycodus hungaricus'
- 'Conchodus infraliasicus belongs to Conchodus' according to Stoppani 1865
- 'Conchodus infraliasicus is a subjective synonym of Lycodus cor'
- 'Craspedodon is a subjective synonym of Physocardia'
- 'Craspedodon hornigii is recombined as Physocardia hornigi'
- 'Dicerocardium curionii belongs to Dicerocardium' according to Stoppani 1865
- 'Dicerocardium curionii belongs to Dicerocardium'
- 'Dicerocardium himalayense belongs to Dicerocardium' according to Stoliczka 1869
- 'Dicerocardium jani belongs to Dicerocardium'
- 'Dicerocardium mediofasciatum belongs to Dicerocardium'
- 'Dicerocardium ragazzonii belongs to Dicerocardium' according to Stoppani 1865
- 'Dicerocardium ragazzonii belongs to Dicerocardium'
- 'Dimyopsis intusornata is recombined as Dimyodon intusornatus' according to Bittner 1912
- 'Dimyopsis intusornata is recombined as Dimyodon intusornatus'
- 'Donax costata is recombined as Myophoria costata'
- 'Gervilleia modiola belongs to Gervilleia'
- 'Gervillia albertii is recombined as Gervilleia albertii'
- 'Gervillia hartmanni is recombined as Gervilleia hartmanni'
- 'Gervillia incurvata is recombined as Gervilleia incurvata'
- 'Hemicardium dolomiticum belongs to Hemicardium' according to Loretz 1875
- 'Hemicardium dolomiticum is recombined as Dicerocardium dolomiticum'
- 'Hemicardium wulfeni belongs to Hemicardium' according to von Hauer 1875
- 'Hemicardium wulfeni is a subjective synonym of Dicerocardium curionii'
- 'Isocardia carintiaca belongs to Isocardia' according to Boué 1835
- 'Isocardia carintiaca is recombined as Physocardia carintiaca'
- 'Lycodus cor belongs to Lycodus' according to Schafhäutl 1863
- 'Lycodus cor belongs to Lycodus'
- 'Lycodus praeliassicus belongs to Lycodus'
- 'Megalodus belongs to Bivalvia'
- 'Megalodus ampezzanus belongs to Megalodus' according to Hoernes 1880
- 'Megalodus boeckhi belongs to Megalodus' according to Hoernes 1898
- 'Megalodus carinthiacus belongs to Megalodus' according to von Hauer 1857
- 'Megalodus columbella belongs to Megalodus' according to Guembel 1900
- 'Megalodus columbella is replaced by Megalodus stoppanii'
- 'Megalodus complanatus belongs to Megalodus' according to Guembel 1900
- 'Megalodus damesi belongs to Megalodus'
- 'Megalodus gryphoides belongs to Megalodus' according to Guembel 1900
- 'Megalodus gryphoides is a subjective synonym of Megalodus tofanae'
- 'Megalodus guembeli belongs to Megalodus' according to Stoppani 1900
- 'Megalodus hoernesi belongs to Megalodus'
- 'Megalodus laczkoi belongs to Megalodus' according to Hoernes 1912
- 'Megalodus loczyi belongs to Megalodus' according to Hoernes 1912
- 'Megalodus mojsvari belongs to Megalodus' according to Hoernes 1880
- 'Megalodus scutatus belongs to Megalodus' according to Schafhäutl 1851
- 'Megalodus scutatus belongs to Megalodus'
- 'Megalodus stoppanii belongs to Megalodus'
- 'Megalodus tofanae belongs to Megalodus' according to Hoernes 1900
- 'Myoconcha gregaria belongs to Myoconcha'
- 'Myophoria goldfussi belongs to Myophoria'
- 'Myophoria inaequicostata belongs to Myophoria'
- 'Myophoria volzi belongs to Myophoria'
- 'Mysidia lithophagoides belongs to Mysidia'
- 'Mysidioptera kochi belongs to Mysidioptera'
- 'Mysidioptera silvatica belongs to Mysidioptera'
- 'Mytilus eduliformis is recombined as Myalina eduliformis'
- 'Nucula elliptica is recombined as Ctenodonta elliptica'
- 'Nucula excavata is recombined as Leda excavata'
- 'Nucula expansa belongs to Nucula'
- 'Nucula goldfussii [misspelled as Nucula goldfussi] belongs to Nucula'
- 'Nucula lineata is recombined as Ctenodonta (Prosoleptus) lineata'
- 'Opis (Coelopis) praeladina belongs to Opis (Coelopis)'
- 'Pecten (Entolium) lavaredanus belongs to Pecten (Entolium)'
- 'Physocardia verae belongs to Physocardia'
- 'Pleuromya loeschmanni belongs to Pleuromya'
- 'Posidonomya wengensis is recombined as Posidonia wengensis'
- 'Prosoleptus was reranked as Ctenodonta (Prosoleptus) and belongs to Ctenodonta'
- 'Retzia mojsisovicsi belongs to Retzia'
- 'Retzia oxyrhynchus belongs to Retzia' according to Renz 1912
- 'Rhynchonella carantana belongs to Rhynchonella'
- 'Spiriferina loczyi belongs to Spiriferina' according to Renz 1912
- 'Spirigera trisulcata is recombined as Athyris trisulcata'
- 'Terebratula wissmani is recombined as Athyris wissmanni'
- 'Trigonia laevigata is recombined as Myophoria laevigata'
- 'Trigonodus postrablensis belongs to Trigonodus'
- 'Waldheimia (Aulacothyris) praepulchella belongs to Waldheimia (Aulacothyris)'
- 'Waldheimia (Cruratula) vespremica belongs to Waldheimia (Cruratula)'
- 'Waldheimia eudora belongs to Waldheimia'