KUMIP Holotypes - Pierce and Rasmussen 1989

 Pierce, H.G. & D.L. Rasmussen, 1989, J. Paleont. 63(6), p. 846-851, figs. 1-2; New Land Snails (Archaeogastrodpoda, Helicinidae) from the Miocene (Early Barstovian) Flint Creek Beds of Western Montana.

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