The Mineral Conchology of Great Britain: Or Coloured Figures and Descriptions of Those Remains of Testaceous Animals of Shells, which Have Been Preserved at Various Times and Depths in the Earth, Volumen 7

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B. Meredith, sold by the author, 1844
 

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Página 68 - Shell somewhat globular, equivalve, closed; hinge with two approximate teeth, and a remote lateral tooth in one valve, and a concave tooth and remote lateral one in the other.
Página 69 - Defrance. Gen. char. A trochiform spiral shell, with an angular sinus near the middle of the outer lip, from which a band marked with lines of growth that indicate the sinus is carried round the whorls ; no beak or sinus at the base of the aperture ; a columella with or without an umbilicus.
Página 35 - French individuals of this species, that there can be no hesitation in referring it to the same...

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