Stone, P, Rigby, S and Floyd, J.D (2003) 'Advances in Scottish graptolite biostratigraphy: an introduction.' Scottish Journal of Geology, 39 (1). pp. 11-15. ISSN 0036-9276

Official URL: http://doi.org/10.1144/sjg39010011

Abstract

Graptolites were colonial organisms that first appeared in the Cambrian. In early Ordovician times they migrated from the benthos into the plankton, becoming some of the most significant zooplankton of the Lower Palaeozoic. Planktonic graptolites radiated quickly, reached an acme of variation in the late Ordovician and Silurian, then declined into extinction by the mid-Devonian. The benthic graptolites followed them to extinction in the Carboniferous.

Item Type: Article
Divisions: Chancelry
Date Deposited: 07 Jan 2018 21:39
Last Modified: 07 Jan 2018 21:39
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