†family Antactinodiontidae Guo 1980 (clam)
Bivalvia - Protobranchia - Antactinodiontidae
Parent taxon: Protobranchia according to P. Bouchet et al. 2010
Sister taxa: Nuculaniformii, Nuculiformii, Sareptoidea, Solemyoida, Zeehania
Subtaxa: Antactinodion
Ecology: facultatively mobile infaunal suspension feeder
Distribution: found only at Daigu, Mengzi (Devonian of China)