The evolutionary lineage of Petalolithus to Cephalograptus : from Coalpit Bay, Northern Ireland

Snelling, Andrea M.; Zalasiewicz, Jan A.. 2011 The evolutionary lineage of Petalolithus to Cephalograptus : from Coalpit Bay, Northern Ireland. Proceedings of the Yorkshire Geological Society, 58 (4). 345-350. 10.1144/pygs.58.4.305

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Abstract/Summary

The evolution of graptolites is the basis upon which much of the Lower Palaeozoic is subdivided. Amongst the clearest evolutionary lineages within graptolites are those that show seemingly unidirectional trends in morphology, such as the sequence of stratigraphically successive taxa of Petalolithus and Cephalograptus, discussed here. Graptolite specimens collected in the 1960s from Coalpit Bay, Northern Ireland are consistent with the succession established in the Czech Republic by Bouček & Přibyl (1941) and Štorch (1998), and include the first UK records of P. aff. krizi. We recognise other intermediate forms within this lineage that may enable further subdivision of the convolutus Biozone.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1144/pygs.58.4.305
Programmes:	BGS Programmes 2010 > NERC Isotope Geoscience Laboratory
ISSN:	0044-0604
Date made live:	14 Dec 2011 15:10 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/16143

Item Type:

Publication - Article

Digital Object Identifier (DOI):

10.1144/pygs.58.4.305

Programmes:

BGS Programmes 2010 > NERC Isotope Geoscience Laboratory

ISSN:

0044-0604

Date made live:

14 Dec 2011 15:10 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/16143