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V.—The Oldest Siphonotreta

Published online by Cambridge University Press:  01 May 2009

G. F. Matthew
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Extract

The ancient Brachiopodous genus Siphonotreta is well known by its species occurring in the Ordovician and Silurian strataof Russia and Great Britain, and its peculiar pedicle opening hasbeen the subject of remark. The author is not aware that this genus has hitherto been reported from any Cambrian terrain, and, therefore, the greatest interest will attach to a form recently found in the lower beds of the St. John Group, which is nearer to Siphonotreta than to any other known genus.

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Type
Original Articles
Information
Geological Magazine , Volume 4 , Issue 2 , February 1897, pp. 68 - 71
Copyright
Copyright © Cambridge University Press 1897

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References

page 68 note 1 Trans. New York Acad. Sci., vol. xiv, pp. 101–153.Google Scholar

page 69 note 1 See “ Manual of the Mollusca,” Woodward, S. P., London, 1875, p. 390, fig. 201.Google Scholar

page 69 note 2 Hall, and Clarke, , “ Genera of Palaeozoic Brachiopoda,” Albany, 1892, p. 110.Google Scholar

page 69 note 3 Geol. Mag., London, 1877, Pl. II, Figs. 9, 11.Google Scholar See also Hall, and Clarke, , “ Genera of Palaeozoic Brachiopoda,” pl. iv, fig. 25.Google Scholar

page 69 note 4 “ Russia and the Ural Mountains,” Paris, 1815, vol. ii, pl. i, fig. 14d.Google Scholar

page 70 note 1 Dedicated to Dr. J. F. Kemp, Professor of Geology at Columbia College. University, New York, well known for his work on the Archæan and Cambrian Geology of the State of New York.