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II.—Contributions to the Palæontology of the Yorkshire Oolites1

Published online by Cambridge University Press:  01 May 2009

Wilfrid H. Hudleston
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Extract

It is not proposed to discuss the merits of the generic name applied to a group of Univalves so characteristic of and so abundant in the Jurassic rocks. Melania, Eulima, and Chemnitzia have each of them served in turn, and in adopting Chemnitzia after D'Orbigny, the late Dr. S. P. Woodward observed that the “Melaniœ” of the Secondary rocks are provisionally referred to this genus. Pictet and Campiche include the Chemnitziœ and Phasianellœ of the Oolites in one genus Psendomelania, thus preserving to a certain extent the old generic appellation.

Type
Original Articles
Information
Geological Magazine , Volume 7 , Issue 9 , September 1880 , pp. 391 - 404
Copyright
Copyright © Cambridge University Press 1880

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References

page 391 note 2 Manual of Mollusca, p. 126.

page 393 note 1 Obere Jura, p. 241.

page 393 note 2 op. cit. p. 117.

page 394 note 1 This collection, stratigraphically arranged by Dr. Barrois, is one of great interest and value. The general fauna of the beds in question seems to be on a level with the whole of our Yorkshire Coralline Oolite and Passage-beds, including part of the Lower Calcareous Grit, though the actual association of fossils is not exactly the same. The prevailing ammonites are A. cordatus and A. vertebralis in several phases. The representative of the group Perisphinctes is principally the small form so common in the Lower Calcareous Grit of Cayton Bay, and A. perarmatus is very scarce.

page 396 note 1 Chemnitzia melanioides, Phillips.—I have hitherto failed to identify this figure with any fossil known to me. The original should be at York, but I have not had the good fortune to see it.

page 398 note 1 Mem. Soc. Linn. Norm. tom. vii. pl. 12, fig. 4.

page 400 note 1 op. cit. pl. xii. fig. 15.

page 401 note 1 See Goldfuss, Petrefacta, div. v. p. 29, pl. 143.Google Scholar

page 401 note 2 Stat. Géol. de la Meuse.

page 401 note 3 Et. Supr. Jurass. de Boulogne.

page 402 note 1 op. cit. p. 76.