†subfamily Trigonopinae Gardner and Campbell 2002 (clam)
Bivalvia - Carditida - Astartidae
Parent taxon: Astartidae according to J. G. Carter et al. 2011
See also Bouchet et al. 2010
Sister taxa: Alleinacin, Astartella, Astartellinae, Astartinae, Astartoides, Astartopsis, Balantioselena, Digitaria, Ensio, Eriphylinae, Flattopia, Goodallia, Lirotarte, Lyapinella, Middalya, Nargunella, Neocrassina, Opinae, Oxyeurax, Permartella, Pinzonellinae, Praeconia, Pressastarte, Radiastarte, Taxocardia, Terraiinae, Woodia
Subtaxa: none
Ecology: facultatively mobile infaunal suspension feeder
Distribution: there are no occurrences of Trigonopinae in the database