Megastraea
Encyclopedia
Megastraea is a genus
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of medium-sized to large sea snail
Snail
Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...

s with a calcareous
Calcareous
Calcareous is an adjective meaning mostly or partly composed of calcium carbonate, in other words, containing lime or being chalky. The term is used in a wide variety of scientific disciplines.-In zoology:...

 operculum
Operculum (gastropod)
The operculum, meaning little lid, is a corneous or calcareous anatomical structure which exists in many groups of sea snails and freshwater snails, and also in a few groups of land snails...

, marine
Marine (ocean)
Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...

 gastropod mollusks in the family Turbinidae
Turbinidae
Turbinidae, the turban snails, are a family of small to large marine gastropods. Turbinidae have a strong, thick calcareous operculum readily distinguishing them from the somewhat similar Trochidae or top snails, which have a corneous operculum...

, the turban snails.

Species

Species within this genus were previously placed in the genus Astraea
Astraea (gastropod)
Astraea is a genus of medium to large sea snails, marine gastropod mollusks in the family Turbinidae, the turban snails.-Species:Species within this genus include:*Astraea cookii *Astraea danieli Alf & Kreipl, 2006...

. They include:
  • Megastraea turbanica
    Megastraea turbanica
    Megastraea turbanica is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.-External links:* Alf A. & Kreipl K. The family Turbinidae. Subfamilies Turbininae Rafinesque, 1815 and Prisogasterinae Hickman & McLean, 1990. In: G.T. Poppe & K. Groh , A...

    (Dall, 1910)
  • Megastraea undosa
    Megastraea undosa
    Megastraea undosa is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails. This species is native to the coast of California.-Distribution:...

    (Wood, 1828)
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