KUMIP Holotypes - Pierce 1992

 Pierce, H.G., 1992, J. Paleont. v.66, no. 4, p.610-620, figs. 1-5: "The Nonmarine Mollusks of Late Oligocene-Early Miocene Cabbage Patch Fauna of Western Montana. II. Terrestrial Gastropod Families Other Than Pupillidae (Pulmonata: Stylommatophora)"

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