Opinions from A. Bittner 1912
- 'Amphiclina amoena belongs to Amphiclina'
- 'Amphiclina coarctatae belongs to Amphiclina' according to Bittner 1890
- 'Amphiclina coarctatae belongs to Amphiclina'
- 'Amphiclina scitula belongs to Amphiclina' according to Bittner 1890
- 'Amphiclina scitula belongs to Amphiclina'
- 'Amphiclina squamula belongs to Amphiclina' according to Bittner 1890
- 'Amphiclina squamula belongs to Amphiclina'
- 'Amphiclinodonta laczkoi belongs to Amphiclinodonta'
- 'Anisactinella was reranked as Spirigera (Anisactinella) and belongs to Spirigera'
- 'Camerothyris was reranked as Aulacothyris (Camerothyris) and belongs to Aulacothyris'
- 'Cruratula was reranked as Waldheimia (Cruratula) and belongs to Waldheimia'
- 'Cyrtina gracillima belongs to Cyrtina'
- 'Cyrtina loczyi belongs to Cyrtina'
- 'Cyrtotheca ampezzana is recombined as Thecocyrtella ampezzana'
- 'Dioristella was reranked as Spirigera (Dioristella) and belongs to Spirigera'
- 'Diplospirella was reranked as Spirigera (Diplospirella) and belongs to Spirigera'
- 'Koninckella fastigata belongs to Koninckella' according to Bittner 1890
- 'Koninckella triadica belongs to Koninckella'
- 'Producta dubia is recombined as Amphiclina dubiae'
- 'Producta leonhardi is recombined as Koninckina leonhardi'
- 'Retzia aracanga belongs to Retzia'
- 'Retzia hungarica belongs to Retzia'
- 'Retzia loczyi belongs to Retzia'
- 'Retzia pseudolyrata belongs to Retzia'
- 'Rhynchonella arpadica belongs to Rhynchonella'
- 'Rhynchonella laczkoi belongs to Rhynchonella'
- 'Rhynchonella linguligera belongs to Rhynchonella'
- 'Rhynchonella pichleri belongs to Rhynchonella' according to Bittner 1890
- 'Rhynchonella pichleri belongs to Rhynchonella'
- 'Rhynchonella tricostata belongs to Rhynchonella' according to Münster 1890
- 'Rhynchonella tricostata belongs to Rhynchonella'
- 'Spirifer calceola is recombined as Cyrtina calceola'
- 'Spiriferina (Mentzelia) belongs to Spiriferina'
- 'Spiriferina (Mentzelia) fraasi belongs to Spiriferina (Mentzelia)' according to Bittner 1890
- 'Spiriferina (Mentzelia) fraasi belongs to Spiriferina (Mentzelia)'
- 'Spiriferina fortis belongs to Spiriferina'
- 'Spiriferina gregaria belongs to Spiriferina'
- 'Spiriferina lipoldi belongs to Spiriferina'
- 'Spirigera balatonica belongs to Spirigera' according to Bittner 1890
- 'Spirigera balatonica is recombined as Spirigera (Dioristella) balatonica'
- 'Terebratula (Waldheimia) zirlensis is recombined as Aulacothyris zirlensis'
- 'Terebratula indistincta is recombined as Spirigera (Dioristella) indistincta'
- 'Terebratula julica belongs to Terebratula'
- 'Terebratula laczkoi belongs to Terebratula'
- 'Terebratula pyriformis is corrected as Terebratula piriformis and belongs to Terebratula'
- 'Terebratula quadriplecta is recombined as Spirigera (Anisactinella) quadriplecta'
- 'Terebratula schloenbachii is recombined as Spirigera schloenbachii'
- 'Terebratula sufflata is recombined as Spirigera sufflata' according to Münster 1890
- 'Terebratula sufflata is recombined as Spirigera (Diplospirella) sufflata'
- 'Terebratula veszpremica belongs to Terebratula' according to Bittner 1890
- 'Terebratula veszpremica belongs to Terebratula'
- 'Terebratula wissmani is recombined as Spirigera (Diplospirella) wissmanni'
- 'Thecidium arenosum is recombined as Thecospira arenosa'
- 'Thecidium discors is recombined as Thecospirella discors'
- 'Thecospira andreaei belongs to Thecospira'
- 'Thecospira porrecta belongs to Thecospira'
- 'Thecospira semseyi belongs to Thecospira'
- 'Thecospira tirolensis [misspelled as Thecospira tyrolensis] belongs to Thecospira'
- 'Thecospirella loczyi belongs to Thecospirella'
- 'Waldheimia (Cruratula) damesi belongs to Waldheimia (Cruratula)' according to Bittner 1890