Megastraea undosa: Difference between revisions

Megastraea undosa
	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
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Vetigastropoda
Order:	Trochida
Superfamily:	Trochoidea
Family:	Turbinidae
Genus:	Megastraea
Species:	M. undosa
Binomial name
	Megastraea undosa; (W. Wood, 1828)
Synonyms'
	Lithopoma undosum (W. Wood, 1828); Astraea undosa (W. Wood, 1828); Pomaulax undosum W. Wood, 1828; Trochus undosus W. Wood, 1828 (basionym);

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Latest revision as of 21:01, 28 December 2023

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[edit]

This species occurs in the eastern Pacific Ocean from California, USA to Central Baja California, Mexico.

Description[edit]

One of the largest gastropod shells found on the Southern California coast, this species varies between 40 mm and 145 mm. The shell lacks an umbilicus, and has a turbinate-conical shape. Like other shells of the family turbinidae it is composed of a thick inner nacreous layer, covered by a thinner porcellanous layer. In this species both are covered by a dark brown shaggy periostracum in life. The periphery of the shell forms a twisted ridge at the outer edge of each whorl. Each whorl also has regular, coarsely sculpted rows of fine knobs and folds. The base is marked with several spiral cords concentric to the arcuated columella which has a pearly groove. The unusual operculum has four strong ridges on its outer side decorated with hard shelly bristles that radiate in a curvilinear fashion from its pointed edge.^[4]^[5]

Habitat[edit]

This large snail inhabits rocky shores in shallow waters, generally protected areas below the low tide level.

References[edit]

^ 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 Archived 18 January 2010 at the Wayback Machine
^ W.H. Dall, Thesaurus conchyliorum, or, Monographs of genera of shells, v. 5 (1887)
^ Rogers, Julia Ellen (1907), The shell book

W.H. Dall (1910) New Species of West American Shells; The Nautilus v. 23, 1910

External links[edit]

"Lithopoma undosum". Gastropods.com. 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

[1] Wood, Index Test. Suppl., pl. V fig. 7

[WoRMS-2] Megastraea undosa (W. Wood, 1828). Retrieved through: World Register of Marine Species on 26 August 2011.

[3] Astraea undosa - Properties - The Taxonomicon Archived 18 January 2010 at the Wayback Machine

[4] W.H. Dall, Thesaurus conchyliorum, or, Monographs of genera of shells, v. 5 (1887)

[5] Rogers, Julia Ellen (1907), The shell book

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[2]

[3]

[4]

[5]

@@ Line 1: / Line 1: @@
+{{Short description|Species of gastropod}}
-{{Use dmy dates|date=November 2011}}
+{{Use dmy dates|date=September 2020}}
 {{Speciesbox
 | taxon = Megastraea undosa
@@ Line 20: / Line 21: @@
 == Description ==
-One of the largest gastropod shells found on the Southern California coast, this species varies between 40&nbsp;mm and 145&nbsp;mm. The shell lacks an [[umbillicus (mollusc)|umbilicus]], and has a turbinate-conical shape.   Like other shells of the family [[turbinidae]] it is composed of a thick inner nacreous layer, covered by a thinner porcellanous layer.  In this species both are covered by a dark brown shaggy [[periostracum]] in life.  The periphery of the shell forms a twisted ridge at the outer edge of each [[Whorl (mollusc)|whorl]]. Each whorl also has regular, coarsely sculpted rows of fine knobs and folds. The base is marked with several spiral cords concentric to the arcuated [[Columella (gastropod)|columella]] which has a pearly groove.  The unusual [[Operculum (gastropod)|operculum]] has four strong ridges on its outer side decorated with hard shelly bristles that radiate in a curvilinear fashion from its pointed edge.<ref>[https://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>[https://www.biodiversitylibrary.org/page/23758089#page/295/mode/1up  Rogers, Julia Ellen (1907), The shell book]</ref>
+One of the largest gastropod shells found on the Southern California coast, this species varies between 40&nbsp;mm and 145&nbsp;mm. The shell lacks an [[umbilicus (mollusc)|umbilicus]], and has a turbinate-conical shape.   Like other shells of the family [[turbinidae]] it is composed of a thick inner nacreous layer, covered by a thinner porcellanous layer.  In this species both are covered by a dark brown shaggy [[periostracum]] in life.  The periphery of the shell forms a twisted ridge at the outer edge of each [[Whorl (mollusc)|whorl]]. Each whorl also has regular, coarsely sculpted rows of fine knobs and folds. The base is marked with several spiral cords concentric to the arcuated [[Columella (gastropod)|columella]] which has a pearly groove.  The unusual [[Operculum (gastropod)|operculum]] has four strong ridges on its outer side decorated with hard shelly bristles that radiate in a curvilinear fashion from its pointed edge.<ref>[https://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>[https://www.biodiversitylibrary.org/page/23758089#page/295/mode/1up  Rogers, Julia Ellen (1907), The shell book]</ref>
 == Habitat ==
@@ Line 30: / Line 31: @@
 ==External links==
+{{Commons category|Megastraea undosa}}
-* [http://www.gastropods.com/2/Shell_292.shtml Gastropods.com: ''Lithopoma undosum''; retrieved: 9 November 2011]
+* {{Gastropods.com|key=2|id=292|title=''Lithopoma undosum''|access-date=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.&nbsp;1–82, pls 104-245.
+* 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.&nbsp;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.
 * [https://www.biodiversitylibrary.org/page/42496865#page/341/mode/1up Proo, Sag del, Larval and early juvenile development of the wavy turban snail, Megastraea undosa (Wood, 1828) (Gastropoda : Turbinidae); The Veliger 46 (4), 2003]
-{{Commons category|Megastraea undosa}}
 {{Taxonbar|from=Q3137567}}
@@ Line 41: / Line 41: @@
 {{DEFAULTSORT:Megastraea Undosa}}
 [[Category:Megastraea|undosa]]
-[[Category:Molluscs described in 1828]]
+[[Category:Gastropods described in 1828]]
+[[Category:Taxa named by William Wood (zoologist)]]