Asoellidae Begg & Campbell, 1986 † accepted as Hunanopectinidae Yin, 1985 † (source of synonymy)
Butovicellidae Kríž, 1965 † accepted as Modiomorphidae Miller, 1877 † (source of synonymy)
Chaenomyidae Waterhouse, 1966 † accepted as Pholadomyidae King, 1844 (source of synonymy)
Cypricardiniidae Ulrich in Ulrich & Scofield, 1894 † (basis of record)
Cypricardiniidae Ulrich in Ulrich & Scofield, 1894 † (current name source)
Cypricardiniidae Ulrich in Ulrich & Scofield, 1894 † (extant flag source)
Cypricardiniidae Ulrich in Ulrich & Scofield, 1894 † (habitat flag source)
Eoastartidae Newell & Boyd, 1975 † accepted as Schizodidae † (source of synonymy)
Sinodoridae Pojeta & Zhang, 1984 † accepted as Schizodidae † (source of synonymy)