Lyell, C., 1840. On the occurrence of two species of shells of the genus Conus in the Lias, or Inferior Oolite, near Caen in Normandy. The Annals and Magazine of Natural History, 6: 292 -296 .
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New Species-Group Names:
- cadonensis Lyell & Sowerby ii in Lyell, 1840. p. 296. figs. 1a-c.
- concavus Lyell & Sowerby ii in Lyell, 1840. p. 296. figs. 2a-d.