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1. On Annelid Tracks in the Exploration of the Millstone Grits in the South-west of the County of Clare

Published online by Cambridge University Press:  16 March 2015

Robert Harkness Esq., F.R.S.E., F.G.S.
Robert Harkness Esq., F.R.S.E., F.G.S.
Affiliation:
Professor of Geology, Queen's College, Cork.
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Extract

The author remarks that the existence of Annelida during the Palæozoic formations is manifested in two conditions. In the one, we have the shelly envelope which invests the order Tubicola, in the form of Seapolites; and in the other, the tracks of the orders Abranchia and Dorsi-branchiata are found impressed on deposits which were, at one time, in a sufficiently soft state to receive the impressions of the wanderings of these animals.

Among the strata which have hitherto afforded annelid tracks, those which, in the county of Clare, represent a portion of the equivalents of the Millstone Grit, contain such tracks, in their most perfect state of preservation in great abundance; and these strata also furnish evidence concerning the circumstances which prevailed during their deposition.

Type
Proceedings 1854-55
Information
Proceedings of the Royal Society of Edinburgh , Volume 3 , 1857 , pp. 294 - 295
Copyright
Copyright © Royal Society of Edinburgh 1857

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