Aviculopecten elegantulus Bittner, 1901 † accepted as Ornithopecten elegantulus (Bittner, 1901) † (original description)
Enantiostreon Bittner, 1901 † (original description)
Enantiostreon hungaricum Bittner, 1901 † (original description)
Myophoria fallax var. subrotunda Bittner, 1901 † (original description)
Myophoria praeorbicularis Bittner, 1901 † (original description)
Pecten (Amphijanira) Bittner, 1901 † accepted as Amphijanira Bittner, 1901 † (original description)
Pecten (Antijanira) Bittner, 1901 † accepted as Antijanira Bittner, 1901 † (original description)
Pecten (Antijanira) hungaricus Bittner, 1901 † accepted as Antijanira hungarica (Bittner, 1901) † (original description)
Pecten (Chlamys) desiderii Bittner, 1901 † accepted as Camptonectes (Annulinectes) desiderii (Bittner, 1901) † represented as Camptonectes desiderii (Bittner, 1901) † (original description)
Pecten arpadicus Bittner, 1901 † accepted as Antijanira arpadica (Bittner, 1901) † (original description)
Pecten avaricus Bittner, 1901 † accepted as Antijanira avarica (Bittner, 1901) † (original description)
Pecten balatonicus Bittner, 1901 † accepted as Pleuronectites balatonicus (Bittner, 1901) † (original description)
Pecten incognitus Bittner, 1901 † accepted as Entolium incognitum (Bittner, 1901) † (original description)
Pecten inconspicuus Bittner, 1901 † accepted as Praechlamys inconspicua (Bittner, 1901) † (original description)
Pecten janirulaeformis Bittner, 1901 † accepted as Amphijanira janirulaeformis (Bittner, 1901) † (original description)
Pecten margaritiferus Bittner, 1901 † accepted as Granulochlamys margaritifera (Bittner, 1901) † (original description)
Pecten peisonis Bittner, 1901 † accepted as Antijanira peisonis (Bittner, 1901) † (original description)
Pecten praemissus Bittner, 1901 † accepted as Pleuronectites praemissus (Bittner, 1901) † (original description)
Pecten pseudodiscites Bittner, 1901 † accepted as Entolium pseudodiscites (Bittner, 1901) † (original description)
Pecten subalternicostatus Bittner, 1901 † accepted as Praechlamys subalternicostata (Bittner, 1901) † (original description)
Pecten subdivisus Bittner, 1901 † accepted as Praechlamys subdivisa (Bittner, 1901) † (original description)
Pecten transdanubialis Bittner, 1901 † accepted as Praechlamys transdanubialis (Bittner, 1901) † (original description)
Pecten venustulus Bittner, 1901 † accepted as Leptochondria venustula (Bittner, 1901) † (original description)
Pecten verrucosus Bittner, 1901 † accepted as Leptochondria verrucosa (Bittner, 1901) † (original description)
Pecten veszprimiensis Bittner, 1901 † accepted as Leptochondria veszprimiensis (Bittner, 1901) † (original description)
Pecten vetulus Bittner, 1901 † accepted as Leptochondria vetula (Bittner, 1901) † (original description)
Pseudomonotis loczyi Bittner, 1901 † accepted as Confusionella loczyi (Bittner, 1901) † (original description)