The phylogenetic affinities of Nothofagus (Nothofagaceae) leaf fossils based on combined molecular and morphological data
Jordan, GJ and Hill, RS (1999) The phylogenetic affinities of Nothofagus (Nothofagaceae) leaf fossils based on combined molecular and morphological data. International Journal of Plant Sciences, 160 (6). pp. 1177-1188.
Official URL: http://www.journals.uchicago.edu/IJPS/journal/issues/v160n6/990112/brief/990112.abstract.html
The phylogenetic placements of leaf fossils of Nothofagus (Nothofagaceae) were determined using parsimony analyses of molecular and morphological data for extant species combined with morphological data for fossils. Placement was possible for only seven of the thirty or so described fossil species of Nothofagus because only these had sufficiently good preservation of both cuticular and leaf architectural characters. In combined analyses of morphology and molecular data leaf cuticular characters showed little homoplasy. In contrast, many architectural characters, including some leaf margin and venation characters, showed high homoplasy, making it difficult or impossible to accurately determine the phylogenetic affinities of impression fossils of this genus.
|Additional Information:||The definitive version is available online from http://www.journals.uchicago.edu/IJPS/home.html|
|Keywords:||Cainozoic, cuticle, leaf architecture, parsimony, systematics|
|Deposited By:||Dr Gregory J Jordan|
|Deposited On:||02 Sep 2007|
|Last Modified:||18 Jul 2008 20:06|
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