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†Sulcatapex Yen 1946
urn:lsid:organismnames.com:name:3052363
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vlCcCmi
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†Sulcatapex Yen 1946
Yen 1946. On Lower Cretaceous fresh-water Mollusks of Sage Creek, Wyoming. Notulae Naturae Philadelphia No, 166 1946: pp. 1-13