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Vertigo geyeri : ウィキペディア英語版 | Vertigo geyeri
''Vertigo geyeri'' is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusc or micromollusc in the family Vertiginidae, the whorl snails. ==Description== The egg-shaped-oval shell measures just 1.7 to 1.9 mm. in length and 1.2 mm in width. There are up to 5 whorls with deep seams. The aperture has 4 small protrusions (called "teeth") ( on parietal one columellar and two palatal), it can also have fewer teeth. The colour of the shell is reddish-brown and the surface is shiny. The shell has regular growth striations and is almost smooth.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Vertigo geyeri」の詳細全文を読む
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