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Macrofossil evidence for Quaternary plant extinction and vegetation change in Western Tasmania

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Jordan, GJ (1992) Macrofossil evidence for Quaternary plant extinction and vegetation change in Western Tasmania. PhD thesis, University of Tasmania.

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Abstract

Macrofossils from Pleistocene sediments in western Tasmania are investigated
in order to reconstruct vegetation from this critical period. in the history of Australia's
vegetation. The microfossil record shows that many taxa. notably the common Tertiary
taxa Nothofagus subgenus Brassospora. Araucariaceae. Dacrycarpus and Dacrydium.
were present in western Tasmania during the Latest Pliocene or Earliest Pleistocene but
are now extinct from Tasmania. Most of these taxa are likely to have been rainforest
species, but some may have been from sclerophyll vegetation (e.g. Beauprea). A few
of these persisted into the Early-Middle Pleistocene and only Quintinia to the Late
Pleistocene.

Macrofossils of now globally and regionally extinct taxa occur in the EarlyMiddle
Pleistocene Regatta Point sediments. Most of these extinct taxa are not distinct
in the relatively good microfossil record of that area. Some clearly sclerophyllous taxa
have become extinct e.g. Banksia strahanensis and Oxylobium sp. nov. Rainforest
taxa no longer occurring in Tasmania have affinities with species from temperate New
Zealand (e.g. Quintinia sp. nov.), montane north-eastern New South Wales and
Queensland (e.g. Rubus cf. moorei forma glabra, aff. Austromyrtus and
Laurophyllum sp.). Macrofossils of only one extinct species occur in sediments
younger than Regatta Point: Banksia kingii from the Late Pleistocene Melaleuca Inlet
sediments......

Item Type: Thesis (PhD)
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Date Deposited: 08 Jul 2011 05:14
Last Modified: 11 Mar 2016 05:55
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