Megastraea is a genus of medium-sized to large sea snails with a calcareous operculum, marine gastropod mollusks in the family Turbinidae, the turban snails.Bouchet, P.; Rosenberg, G. (2011). Megastraea McLean, 1970. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=528082
Species Species within this genus were previously placed in the genus Astraea. They include: Megastraea turbanica (Dall, 1910) Megastraea undosa (Wood, 1828)
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