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Book Chapter

A global review of Permian macrofloral biostratigraphical schemes

By
Christopher J. Cleal
Christopher J. Cleal
Department of Natural Sciences, National Museum Wales, Cathays Park, Cardiff CF10 3NP, UK chris.cleal@museumwales.ac.uk
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Published:
January 01, 2018

Abstract:

Separate biostratigraphical schemes have been developed for Permian macrofloras in the five main phytochoria (palaeokingdoms), reflecting the essential lack of overlap in taxonomic composition. In Europe two biozones are normally recognized, in North America three zones, in Cathaysia three or four zones, in Gondwana four zones and in Angara five zones. The stratigraphical resolution tends to be far less than that of palynology, and up to an order of magnitude coarser than the macrofloral biozones of the Pennsylvanian subsystem. This is probably due, at least in part, to the lack of rigor in the way that the Permian macrofloral zones have been defined. Nevertheless, the existing zones do provide evidence of the overarching trajectory of change in vegetation through the Permian Period, as it responded at all palaeolatitudes to a combination of climate change, large-scale volcanic eruptions and tectonically driven landscape changes.

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Contents

Geological Society, London, Special Publications

The Permian Timescale

S.G. Lucas
S.G. Lucas
New Mexico Museum of Natural History, USA
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S. Z. Shen
S. Z. Shen
Nanjing Institute of Geology and Palaeontology, China
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Geological Society of London
Volume
450
ISBN electronic:
9781786203311
Publication date:
January 01, 2018

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