Megastraea undosa: Difference between revisions
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* ''Lithopoma undosum'' <small>(W. Wood, 1828)</small> |
* ''Lithopoma undosum'' <small>(W. Wood, 1828)</small> |
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* ''Astraea undosa'' <small>(W. Wood, 1828)</small> |
* ''Astraea undosa'' <small>(W. Wood, 1828)</small> |
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* ''Pomaulax undosum'' <small>W. Wood, 1828</small> |
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* ''Trochus undosus'' <small>W. Wood, 1828 (basionym)</small> |
* ''Trochus undosus'' <small>W. Wood, 1828 (basionym)</small> |
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== Description == |
== Description == |
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The size of the shell of this species varies between 40 mm and 145 mm. The white, imperforate shell has a turbinate-conical shape. The wavy periphery is overhanging. The [[periostracum]] is dark brown. The concave base has three small, spiral cords.The [[Operculum (gastropod)|operculum]] shows on its outside three ridges. |
The size of the shell of this species varies between 40 mm and 145 mm. The white, imperforate shell has a turbinate-conical shape with a thick, pearly lining. The wavy, horny periphery is overhanging with fine laminae. It is shapes over a series of nodules that form a twisted ridge at the outer edge of each [[Whorl (mollusc)|whorl]]. Each whorl shows regular rows of fine knobs and fold. The [[periostracum]] is dark brown. The concave base has three small, spiral cords.The arcuated [[Columella (gastropod)|columella]] has a pearly groove. The [[Operculum (gastropod)|operculum]] shows on its outside three ridges. <ref> [http://www.biodiversitylibrary.org/page/16085215#page/238/mode/1up, W.H. Dall, ''Thesaurus conchyliorum, or, Monographs of genera of shells'', v. 5 (1887)] </ref> <ref> [http://www.biodiversitylibrary.org/page/23758089#page/295/mode/1up Rogers, Julia Ellen (1907), The shell book] </ref> |
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== Habitat == |
== Habitat == |
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{{DEFAULTSORT:Megastraea Undosa}} |
{{DEFAULTSORT:Megastraea Undosa}} |
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[[Category:Megastraea|undosa]] |
[[Category:Megastraea|undosa]] |
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{{Turbinidae-stub}} |
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Revision as of 08:18, 1 September 2014
| Megastraea undosa | |
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| Shell and operculum of Megastraea undosa (W. Wood, 1828), measuring 71.4 mm height by 89.9 mm diameter, collected at Salt Creek Beach, Laguna Niguel, in California. | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Vetigastropoda |
| Order: | Trochida |
| Superfamily: | Trochoidea |
| Family: | Turbinidae |
| Genus: | Megastraea |
| Species: | M. undosa
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| Binomial name | |
| Megastraea undosa | |
| Synonyms'[2] | |
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Megastraea undosa, common name the wavy turban snail, is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails. [2] This species is native to the coast of California.[3]
Distribution
This species occurs in the eastern Pacific Ocean from California, USA to Central Baja California, Mexico.
Description
The size of the shell of this species varies between 40 mm and 145 mm. The white, imperforate shell has a turbinate-conical shape with a thick, pearly lining. The wavy, horny periphery is overhanging with fine laminae. It is shapes over a series of nodules that form a twisted ridge at the outer edge of each whorl. Each whorl shows regular rows of fine knobs and fold. The periostracum is dark brown. The concave base has three small, spiral cords.The arcuated columella has a pearly groove. The operculum shows on its outside three ridges. [4] [5]
Habitat
This large snail inhabits rocky shores in shallow waters, generally protected areas below the low tide level.
References
- ^ Wood, Index Test. Suppl., pl. V fig. 7
- ^ a b Megastraea undosa (W. Wood, 1828). Retrieved through: World Register of Marine Species on 26 August 2011.
- ^ Astraea undosa - Properties - The Taxonomicon
- ^ W.H. Dall, Thesaurus conchyliorum, or, Monographs of genera of shells, v. 5 (1887)
- ^ Rogers, Julia Ellen (1907), The shell book
External links
- Gastropods.com: Lithopoma undosum; retrieved: 9 November 2011
- Alf A. & Kreipl K. (2011) The family Turbinidae. Subfamilies Turbininae Rafinesque, 1815 and Prisogasterinae Hickman & McLean, 1990. In: G.T. Poppe & K. Groh (eds), A Conchological Iconography. Hackenheim: Conchbooks. pp. 1–82, pls 104-245.
- Williams, S.T. (2007). Origins and diversification of Indo-West Pacific marine fauna: evolutionary history and biogeography of turban shells (Gastropoda, Turbinidae). Biological Journal of the Linnean Society, 2007, 92, 573–592.
- Proo, Sag del, Larval and early juvenile development of the wavy turban snail, Megastraea undosa (Wood, 1828) (Gastropoda : Turbinidae); The Veliger 46 (4), 2003
Wikimedia Commons has media related to Megastraea undosa.