†Mercenaria permagna Conrad 1838 (quahog)
Bivalvia - Cardiida - Veneridae
Alternative combination: Venus permagna
Belongs to Mercenaria according to L. W. Ward and B.W. Blackwelder 1987
Sister taxa: Mercenaria blakei, Mercenaria campechiensis, Mercenaria capax, Mercenaria cuneata, Mercenaria druidi, Mercenaria ducatelli, Mercenaria erecta, Mercenaria gardnerae, Mercenaria langdoni, Mercenaria mercenaria, Mercenaria nannodes, Mercenaria plena, Mercenaria prodroma, Mercenaria tetrica
Ecology: facultatively mobile infaunal suspension feeder