Reference : Morphometric analysis of proposed evolutionary lineages of Early Devonian land plant ...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
Morphometric analysis of proposed evolutionary lineages of Early Devonian land plant spores
Breuer, P. [> > > >]
Stricanne, L. [> > > >]
Steemans, Philippe mailto [Université de Liège - ULiège > Département de géologie > Paléobotanique - Paléopalynologie - Micropaléontologie (PPM) >]
Geological Magazine
Cambridge Univ Press
Yes (verified by ORBi)
New York
[en] Early Devonian ; miospore ; statistical analysis ; phylogeny
[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.

File(s) associated to this reference

Fulltext file(s):

Restricted access
Breuer et al 2005.pdfPublisher postprint501 kBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.