Amastra crassilabrum
Amastra crassilabrum is an extinct species of air-breathing land snail, a terrestrial pulmonate gastropod mollusks in the family Amastridae.
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.