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IV.—The Lantern of Perischodomus

Published online by Cambridge University Press:  01 May 2009

Herbert L. Hawkins
Herbert L. Hawkins
Affiliation:
Lecturer in Geology, University College, Reading.
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Extract

Some years ago Mr. D. M. S. Watson and I collected, from the Carboniferous Limestone of Clitheroe, Lancashire, a considerable series of Echinoids. One slab of the limestone (measuring 16 × 12 cm.) is covered by a great number of disjointed plates and other skeletal fragments of a large Perischodomus, probably P. bliserialis, M'Coy. Dr. R. T. Jackson refers to the specimen (Phylogeny of the Echini, p. 406), and, as the jaw fragments show features not hitherto described for the genus, it seems advisable to give a brief account of it. The preservation of a compass is a point of special interest, as these delicate structures are known in very few cases in the fossil state.

Type
Original Articles
Information
Geological Magazine , Volume 10 , Issue 7 , July 1913 , pp. 300 - 302
Copyright
Copyright © Cambridge University Press 1913

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