Fontigens aldrichi, common name the Missouri amnicola, is a species of freshwater snail, an aquatic gastropod mollusk in the family Fontigentidae.

[1] The shell is minute, imperforate, obliquely ovate, light brown.

The shell is composed of 3½ very convex whorls separated by unusually deep sutures.

The peristome is continuous, not closely appressed at the upper left side.

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