Cerion tridentatum costellatum Pilsbry, 1946

Cerion tridentatum costellatum Pilsbry, 1946   Cerion tridentatum costellatum Pilsbry, 1946   Cerion tridentatum costellatum Pilsbry, 1946

Cerion tridentatum costellatum Pilsbry, 1946

Cerion tridentatum costellatum Pilsbry, 1946

Cerion tridentatum costellatum Pilsbry, 1946

Cerion tridentatum costellatum Pilsbry, 1946

Cerion tridentatum costellatum Pilsbry, 1946 Juvenile  Cerion tridentatum costellatum Pilsbry, 1946  Cerion tridentatum costellatum Pilsbry, 1948 In Situ  Cerion tridentatum costellatum Pilsbry, 1948 In Situ

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