MolluscaBase source details
Forbes, E. (1846). Descriptions of Secondary fossil shells from South America. In: Darwin, C. Geological Observations on South America. Being the third part of the geology of the voyage of the Beagle under the command of Capt. Fitzroy, R.N. during the years 1832 to 1836. Smith, Elder & Co., London. pp 265-268.
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Forbes, E.
1846
Descriptions of Secondary fossil shells from South America. In: Darwin, C. Geological Observations on South America. Being the third part of the geology of the voyage of the Beagle under the command of Capt. Fitzroy, R.N. during the years 1832 to 1836. Smith, Elder & Co., London. pp 265-268
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Nautilus d'orbignianus Forbes, 1846 † accepted as Eutrephoceras dorbignyanum (Forbes, 1846) † (original description)
