Article (Scientific journals)
Morphometric analysis of proposed evolutionary lineages of Early Devonian land plant spores
Breuer, P.; Stricanne, L.; Steemans, Philippe
2005In Geological Magazine, 142 (3), p. 241-253
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Keywords :
Early Devonian; miospore; statistical analysis; phylogeny
Abstract :
[en] Early Devonian miospore assemblages from 'La Gileppe' (Eastern Belgium) include five varieties of trilete spore belonging to the genus Emphanisporites. These five varieties show a continuous variation of their morphological characteristics. The variation in morphological characteristics can be related to the evolution of morphological features and allows us to define the Emphanisporites micromatus Morphon. A statistical evaluation of this population highlights the interdependence of almost all morphological parameters. This study proves the increase in size of ornamental and structural parameters over several million years. The biometric changes and the progressive replacement of older morphotypes by younger ones indicate that a temporal link exists between these different varieties. Two phylogenetic hypotheses for the E. micromatus Morphon are proposed. This morphological evolution is so far observed only on the Eastern Old Red Sandstone Continent and defines a palaeophytogeographic sinuosus-zavallatus Province.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Breuer, P.
Stricanne, L.
Steemans, Philippe  ;  Université de Liège - ULiège > Département de géologie > Paléobotanique - Paléopalynologie - Micropaléontologie (PPM)
Language :
English
Title :
Morphometric analysis of proposed evolutionary lineages of Early Devonian land plant spores
Publication date :
May 2005
Journal title :
Geological Magazine
ISSN :
0016-7568
Publisher :
Cambridge Univ Press, New York, United States - New York
Volume :
142
Issue :
3
Pages :
241-253
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 27 October 2010

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