†family Nakamuranaiadidae Guo 1981 (clam)
Bivalvia - Trigoniida - Nakamuranaiadidae
Parent taxon: Trigonioidoidea according to J. G. Carter et al. 2011
See also Bouchet et al. 2010
Sister taxa: Americunioninae, Jilinoconchidae, Nippononaiidae, Plicatounionidae, Pseudohyriidae, Sainschandiidae, Trigonioididae
Subtaxa: Cyotrigonioides Enotrigonioides Nakamuranaia
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Cretaceous of China (2 collections), Japan (2), South Korea (2)
• Jurassic of China (1)
Total: 7 collections each including a single occurrence