MolluscaBase source details
Watson, H. (1920). The affinities of Pyramidula, Patulastra, Acanthinula, and Vallonia. Proceedings of the Malacological Society of London. 14 (1): 6-30, pl. 1-2. London [2 May].
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Watson, H.
1920
The affinities of <i>Pyramidula, Patulastra, Acanthinula</i>, and <i>Vallonia</i>
Proceedings of the Malacological Society of London
14 (1): 6-30, pl. 1-2. London [2 May].
Publication
Azecidae H. Watson, 1920 (original description)
