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VI.—Note on the Type-specimens of Ammonites cordatus and Ammonites excavatus, J. Sowerby
Published online by Cambridge University Press: 01 May 2009
Extract
J. Sowerby's type - specimens of Ammonites cordatus and Ammonites excavatus have been dealt with comparatively recently by Miss M. Healey in the Palœontologia universalis (sér. II, fasc. 1, August, 1905, Nos. 94, 94a, and 92, 92a, 92b respectively), but her statements require a little modification in some details. Both specimens are in the British Museum collection, and were described and figured in the Mineral Conchology.
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page 504 note 1 The dedication of the work, and each plate in No. i, which included pls. i–iii with explanatory text, is dated May 25, 1812.
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