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Generations in a Fossil Community

Published online by Cambridge University Press:  01 May 2009

Rhona M. MacLennan
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Extract

In the Central Coalfield of Scotland Carbonicolapseudorobusta Trueman occurs at several horizons in the ovalis zone of the Coal Measures. During a statistical investigation l of this species two of the most important horizons examined were the roof of the Shotts Gas Coal, and the mussel band above the Upper Drumgray Coal (Weir and Leitch, 1936, p. 704). The Upper Drumgray horizon marks the top of the zone and the Shotts Gas Coal lies about 100 feet below. The roof of the latter, about 4 inches thick, is a tough highly carbonaceous shale in which specimens of Carbonicola, while not numerous, are well preserved in solid form. The Upper Drumgray mussel band is composed of about 9 inches of black shale containing crushed shells in great abundance. Over 300 specimens were collected from each horizon, mostly from the tip heaps of collieries. In the case of the Shotts Gas horizon the fossils were obtained from three collieries which lie within an east-west rectangle two miles long by half a mile wide.

Type
Research Article
Information
Geological Magazine , Volume 82 , Issue 4 , August 1945 , pp. 177 - 181
Copyright
Copyright © Cambridge University Press 1945

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References

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