Suborder Trigoniina Dall 1899 (clam)
Parent taxon: Trigonioida according to E. PĂ©rez et al. 2008
Sister taxa: Andivaugonia, Antutitrigonia, Arabitrigonia, Beichuanioidea, Columbitrigonia, Dampietrigonia, Gobiella, Heslingtonia, Kupenga, Litotrigonia, Lyrodesmatacea, Macrotrigonia, Mediterraneotrigonia, Megatrigonioidea, Myophorellina, Myophorelloidea, Nakanotrigonia, Neuquenenitrigonia, Paranditrigonia, Procostaria, Pseudocardinioidea, Skwarkoella, Trigonioidea, Trigonioidoidea, Trigonodoidea, Virgotrigonia, Zaletrigonia, Zulutrigonia
Subtaxa: Trigoniacea
Ecology: facultatively mobile infaunal suspension feeder
Distribution: