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・ Margarites
・ Margarites albolineatus
・ Margarites angulatus
・ Margarites argentatus
・ Margarites atlantoides
・ Margarites avachensis
・ Margarites avenosooki
・ Margarites bairdii
・ Margarites biconica
・ Margarites bisikovi
・ Margarites cabernet
・ Margarites calliostomoides
・ Margarites costalis
・ Margarites crebrilirulata
・ Margarites dnopherus
Margarites ecarinatus
・ Margarites frigidus
・ Margarites giganteus
・ Margarites glabrus
・ Margarites groenlandicus
・ Margarites gunnerusensis
・ Margarites helicinus
・ Margarites hickmanae
・ Margarites huloti
・ Margarites imperialis
・ Margarites keepi
・ Margarites kophameli
・ Margarites koreanicus
・ Margarites laminarum
・ Margarites miona


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Margarites ecarinatus : ウィキペディア英語版
Margarites ecarinatus

''Margarites ecarinatus'' is a species of sea snail, a marine gastropod mollusk in the family Margaritidae.〔Rosenberg, G. (2012). ''Margarites ecarinatus'' Dall, 1919. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=528725 on 2012-09-01〕〔Turgeon, D.D., et al. 1998. Common and scientific names of aquatic invertebrates of the United States and Canada. American Fisheries Society Special Publication 26〕
==Description==
The height of the shell attains 8 mm. The pinkish grey shell is depressed. It has about five rapidly enlarging whorls. The glassy nucleus is minute. The subsequent whorls are moderately inflated. They are separated by a deep but not channelled suture, having a rounded periphery, a wide, completely pervious umbilicus, and a large, very oblique, iridescent aperture. The axial sculpture consists of very fine silky incremental lines. The spiral sculpture consists of low flattish threads separated by narrower interspaces sometimes carrying a finer intercalary thread. This sculpture is carried over the base but is absent from the walls of the wide umbilicus;. The rounded aperture is very oblique. Its margins are sharp, hardly meeting over the body except by a thin layer of enamel. The brown operculum is thin, and multispiral.〔(W;H. Dall Report of the Canadian Arctic Expedition (1913-1918) vol. VIII )〕

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