Emberton, K. C. (1995). When shells do not tell: 145 million years of evolution in North America's polygyrid land snails, with a revision and conservation priorities. Malacologia. 37(1): 69-110. Ann Arbor.
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Emberton, K. C.
1995
When shells do not tell: 145 million years of evolution in North America's polygyrid land snails, with a revision and conservation priorities