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・ Odostomia olssoni
・ Odostomia omaensis
・ Odostomia omphaloessa
・ Odostomia oonisca
・ Odostomia orariana
・ Odostomia oregonensis
・ Odostomia ornatissima
・ Odostomia oryza
・ Odostomia ovata
・ Odostomia paardekooperi
・ Odostomia pacha
・ Odostomia pagodiformis
・ Odostomia pallida
・ Odostomia palmaensis
・ Odostomia palmeri
Odostomia panamensis
・ Odostomia parella
・ Odostomia parodontosis
・ Odostomia parvacutangula
・ Odostomia paulhenrii
・ Odostomia paupercula
・ Odostomia pedica
・ Odostomia pedroana
・ Odostomia pesa
・ Odostomia phanella
・ Odostomia pharcida
・ Odostomia photis
・ Odostomia pilsbryi
・ Odostomia pleioregona
・ Odostomia plicata


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Odostomia panamensis : ウィキペディア英語版
Odostomia panamensis

''Odostomia panamensis'' is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.〔WoRMS (2011). ''Odostomia panamensis'' Clessin, 1900. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=575885 on 2011-11-10〕 〔Keen M. (1971). Sea shells of Tropical West America. Marine mollusks from Baja California to Perú. (2nd edit.). Stanford University Press pp. 1064:〕
==Description==
The milk-white, shining shell is small and measures 3.1 mm. It is heavy, elongate-ovate. Its whorls increase regularly in size. The whorls of the protoconch are small, almost completely obliquey immersed in the first of the succeeding volutions. The six whorls of the teleoconch are moderately and evenly rounded, of porcellanous texture, without any apparent marking,and separated by well marked sutures. The periphery of the body whorl is full and rounded. The base of the shell is inflated and well rounded. The aperture is small, decidedly rissoid, almost channeled anteriorly. The posterior angle is acute. The outer is lip decidedly curved backward anteriorly, very thick within but beveled to form a sharp edge. The columella is extremely short, somewhat reflected and connected posteriorly with the very strong parietal callus. This callus is fully as thick as the edge of the outer lip and connects with it at the posterior angle of the aperture, thus forming a complete periostracum. A prominent oblique fold is present on and a little anterior to the insertion of the columella. 〔 Dall & Bartsch, ''Notes on Japanese, Indo-Pacific and American Pyramidellidae''; Proceedings of the U.S. National Museum, vol XXX n° 1452; 1906 〕

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