Calloarca (Calloarca) Gray 1857 (clam)
Parent taxon: Calloarca according to J. A. Todd 2001
Sister taxa: Barbatia (Calloarca) alternata, Barbatia (Calloarca) irregularis, Barbatia (Calloarca) submarylandica, Calloarca (Taeniarca)
Subtaxa: none
Ecology: stationary epifaunal suspension feeder
Distribution: there are no occurrences of Calloarca (Calloarca) in the database