Emberton, K. C. (1994). Polygyrid land snail phylogeny: external sperm exchange, early North American biogeography, iterative shell evolution. Biological Journal of the Linnean Society. 52(3): 241-271.
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Emberton, K. C.
1994
Polygyrid land snail phylogeny: external sperm exchange, early North American biogeography, iterative shell evolution