MolluscaBase taxon details
original description
(of Planorbis trivolvis Say, 1817) Say, T. (1817). Conchology. - In: Nicholson, W.: American edition of the British Encyclopedia, or, dictionary of arts and sciences comprising an accurate and popular view of the present improved state of human knowledge. First Edition, A-3 - C-6 [= 1-20], pl. [1-4]. page(s): [unpaginated], pl. 2, fig. 2 [details]
basis of record
Burch, J. B. (1989). <i>North American freshwater snails</i>. Malacological Publications, Hamburg, Michigan. pp. i-viii, 1-365. page(s): 204, fig. 736 [details]
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