Amastra crassilabrum
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Amastra crassilabrum is an extinct species of air-breathing land snail, a terrestrial pulmonate gastropod mollusks in the family Amastridae. [1]
Description
(Original description) The shell is conically ovate, pointed at the apex, and ventricose toward the base, with a rather solid structure. It consists of six rounded whorls and features an ovate aperture. The outer lip is significantly thickened internally, while the short columella terminates in a prominent oblique plait. The surface is marked by strong longitudinal striations, with the body whorl often bearing cicatrices.
The body whorl is yellowish-white, contrasting with the dark brown or black coloration of the upper whorls. [2]
Distribution
This species was endemic to Oʻahu, and was known from the Waiʻanae Range.
References
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