Bivalvia - Cardiida - Mactridae
Parent taxon: Mactra according to C. H. Oostingh 1935
See also da Silva Forti 1969
Sister taxa: Mactra (Barymactra), Mactra (Cyclomactra), Mactra (Electomactra), Mactra (Electromactra), Mactra (Heteromactra), Mactra (Mactrella), Mactra (Mactrona), Mactra (Maorimactra), Mactra (Nannomactra), Mactra (Sarmatimactra), Mactra (Stiphromactra), Mactra achatina, Mactra artopta, Mactra auca, Mactra austeniana, Mactra australis, Mactra axiniformis, Mactra clathrodon, Mactra cleryana, Mactra constricta, Mactra darwinii, Mactra diegoana, Mactra dissimilis, Mactra emmonsi, Mactra funerata, Mactra gibbsana, Mactra hamiltonensis, Mactra incomatensis, Mactra irizari, Mactra isabelleana, Mactra lilacea, Mactra maculata, Mactra marplatensis, Mactra mekranensis, Mactra mera, Mactra mississippiensis, Mactra oblonga, Mactra ovalis, Mactra patagonica, Mactra pellucida, Mactra procrassa, Mactra pusilla, Mactra queenslandica, Mactra sericea, Mactra solida, Mactra stultorum, Mactra tripartita, Mactra truncata, Mactra tumbezia, Mactra tumida, Mactra turgida, Mactra utahensis, Trigonella plana, Mactra (Trigonella) arenaria
Subtaxa: Mactra (Mactra) glauca Mactra (Mactra) protoreevesii
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Quaternary of Belgium (1 collection), Iran (1), Japan (1), the Netherlands (2)
• Pliocene of Belgium (1), the United Kingdom (2)
• Miocene of India (4)
Total: 12 collections each including a single occurrence