Bivalvia - Venerida - Mactridae
Alternative spelling: Cyclomactra
Parent taxon: Mactra according to L. R. Cox et al. 1969
See also Sepkoski 2002
Sister taxa: Mactra (Barymactra), Mactra (Electomactra), Mactra (Electromactra), Mactra (Heteromactra), Mactra (Mactra), 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 deshayesii, Mactra diegoana, Mactra dissimilis, Mactra emmonsi, Mactra epidermia, Mactra funerata, Mactra gibbsana, Mactra hamiltonensis, Mactra incomatensis, Mactra irizari, Mactra lilacea, Mactra maculata, Mactra mekranensis, Mactra mera, Mactra mississippiensis, Mactra nuttallii, Mactra ovalis, Mactra papyracea, 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, Mactra (Trigonella) arenaria, Trigonella plana
Subtaxa: none
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Quaternary of New Zealand (1 collection)
• Pliocene of New Zealand (1)
Total: 2 collections each including a single occurrence