Sowerby, G. B. II. (1842). Monograph of the genus Pteroceras. In G. B. Sowerby II (ed.), Thesaurus conchyliorum, or monographs of genera of shells. Vol. 1(2): 41–44, pl.11. London, privately published. [2 Nov 1842].
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Sowerby, G. B. II
1842
Monograph of the genus <i>Pteroceras</i>. In G. B. Sowerby II (ed.), <i>Thesaurus conchyliorum, or monographs of genera of shells</i>. Vol. 1(2): 41–44, pl.11. London, privately published. [2 Nov 1842].