Parent taxon: Trigoniida according to J. G. Carter et al. 2011
See also Bouchet et al. 2010
Sister taxa: Andivaugonia, Antutitrigonia, Arabitrigonia, Beichuanioidea, Columbitrigonia, Dampietrigonia, Gobiella, Heslingtonia, Kupenga, Litotrigonia, Lyrodesmatacea, Macrotrigonia, Mediterraneotrigonia, Megatrigonioidea, Myophorellina, Myophorelloidea, Nakanotrigonia, Neuquenenitrigonia, Paranditrigonia, Procostaria, Pseudocardinioidea, Skwarkoella, Trigoniina, Trigonioidea, Trigonodoidea, Zaletrigonia, Zulutrigonia
Subtaxa: Americunioninae Jilinoconchidae Nakamuranaiadidae Nippononaiidae Plicatounionidae Pseudohyriidae Sainschandiidae Trigonioididae
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Cretaceous of China (16 collections), Germany (1), Japan (22), Kyrgyzstan (1), Niger (1), South Korea (7)
• Jurassic to Cretaceous of China (1)
• Jurassic of China (1), Spain (1)
Total: 51 collections including 57 occurrences