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The taphonomy of a remarkable leaf bed assemblage from the Late Oligocene–Early Miocene Gore Lignite Measures, southern New Zealand

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Ferguson, DK and Lee, DE and Bannister, JM and Zetter, R and Jordan, GJ and Vavra, N and Mildenhall, DC (2010) The taphonomy of a remarkable leaf bed assemblage from the Late Oligocene–Early Miocene Gore Lignite Measures, southern New Zealand. International Journal of Coal Geology, 83 (2-3). pp. 173-181. ISSN 0166-5162

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Abstract

A diverse assemblage of fossil leaves showing cellular detail is reported from the Late Oligocene–Early Miocene Gore Lignite Measures, southern New Zealand. The leaf-remains include at least five conifers, such as the genera Agathis, Dacrycarpus, Phyllocladus and Dacrydium, as well as a number of angiosperms including Gymnostoma, Nothofagus Subgenus Brassospora, Phormium, Proteaceae, Sapindaceae and Ericaceae. A parallel palynological study has identified a number of the same elements. The leaf layers represent litter horizons laid down in pools on the surface of a subtropical ombrotrophic forest mire that formed on an extensive low-lying coastal plain. Highly acidic water ponded in tree-fall depressions prevented microbial decay of the foliage. Taxa represented by both leaves and pollen are considered to have been components of the autochthonous swamp forest. Some other pollen grains are thought to represent local elements, based on the pollination biology of their nearest living relatives. Other taxa whose extant representatives are windpollinated may have grown further away.

Item Type: Article
Keywords: Cenozoic Coal Leaf compressions Pollen Resin Ombrotrophic mire
Journal or Publication Title: International Journal of Coal Geology
Page Range: pp. 173-181
ISSN: 0166-5162
Identification Number - DOI: 10.1016/j.coal.2009.07.009
Additional Information: The definitive version is available at http://www.sciencedirect.com
Date Deposited: 24 Jan 2011 03:00
Last Modified: 18 Nov 2014 04:15
URI: http://eprints.utas.edu.au/id/eprint/10599
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