Bivalvia - Cardiida - Mactridae

Alternative spelling: Mactra (Mactrotoma)

Parent taxon: Mactridae according to A. J. W. Hendy et al. 2008

Sister taxa: Anatina, Darcinia, Darina, Darininae, Hemimactra, Kymatox, Kymatoxinae, Leptomactra, Longimactra, Lutrariinae, Mactrinae, Mactropsis, Mulinia, Pteroluter, Pteropsellinae, Pteropsis, Raeta, Rangia, Scissodesma, Spisula, Tanysiphoninae, Willimactra, Zenatiinae

Subtaxa: Mactrotoma (Micromactra), Mactrotoma fragilis, Mactrotoma quirosana

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Ecology: facultatively mobile infaunal suspension feeder