Late Devonian gastropods from the Canning Basin,Western Australia |
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| Authors: | Alex G. Cook Robert B. Blodgett R. Thomas Becker |
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| Affiliation: | 1. Queensland Museum , P.O. Box 3300, South Brisbane, Queensland, 4101, Australia E-mail: alexC@qm.qld.gov.au;2. Department of Zoology , Oregon State University , Corvallis, Oregon, USA 97331-2914, USA;3. Geologisch-Pal?ontologisches Institut , Westfalische Wilhelms-Universit?t Münster , Correnstrasse 4, D-48169, Münster, Germany |
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| Abstract: | Over 50 identifications of Tertiary pollen are reviewed. The pollen assemblages indicate rain-forest through most of the Tertiary, but the requisites for pollen preservation are biased towards the wetter climates. The present day geographical affinities of the botanical groups are largely with taxa of the tropical zone and Australia-wide taxa. There is geographic variation in the fossil pollen assemblages when southeastern Australia is compared with Central Australia and Queensland. The major changes in the fossil floras coincide with climatic change, indicating the influence of climate on the evolution of plant assemblages. The older phytogeographic concepts are inappropriate for the fossil record, especially when considered in conjunction with palaeoclimates and palaeogeography. It is unfortunate that palynology has given little information of the evolution of floras in drier climatic regimes, or of the evolution of the eucalypts. |
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| Keywords: | Devonian Frasnian Famennian gastropods Canning Basin Australia |
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