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II.—Notes on Carboniferous Mollusca

Published online by Cambridge University Press:  01 May 2009

R. Etheridge Jun.
R. Etheridge Jun.
Affiliation:
Of the Geological Survey of Scotland.
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Extract

Specific Chars.—Polyzoarium composed of small cylindrical stems occupied by oval to hexagonal cells arranged usually in quincunx; or in oblique ascending lines; periphery of the cells erect, sharp, and granular; granules minute, numerous, and closely arranged. Here and there the angles between the cells are occupied by a small supplementary pore or pores, which are occasionally increased in number, and extend vertically between two contiguous cells, or uniting, give rise to an elongated narrow groove-like slit. Section circular.

Type
Original Articles
Information
Geological Magazine , Volume 3 , Issue 4 , April 1876 , pp. 150 - 156
Copyright
Copyright © Cambridge University Press 1876

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References

page 150 note 1 Geol. Rept. London, 1843, p. 339, t. 22a, f. 7

page 150 note 2 l.c. p. 327, t. 22a, f. 6.

page 150 note 3 Lethæa Rossica, 1860, vol. i. p. 402; Atlas, t. 24. f. 8.Google Scholar

page 153 note 1 Murchison's Russia, vol. ii. p. 325, t. 21, f. 3.Google Scholar

page 153 note 2 Petrefacta Germ. vol. ii. p. 125, t. 116, f. 4.Google Scholar

page 153 note 3 Min. Con. vol. vi. p. 144, t. 574, f. 2.Google Scholar

page 153 note 4 l.c. f. 3.

page 154 note 1 Geol. York. 1836, vol. ii. p. 213.Google Scholar

page 154 note 2 Char. Foss. 1875, vol. i. part 4, p. 113.Google Scholar

page 155 note 1 Man. Mollusca, 2nd ed. 1868, t. 14, f. 27.