Reference : Archaeopteris from the Upper Famennian of Belgium: Heterospory, Nomenclature, and Pal...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
Archaeopteris from the Upper Famennian of Belgium: Heterospory, Nomenclature, and Palaeobiogeography
Fairon-Demaret, Muriel mailto [Université de Liège - ULg > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences) > > >]
Leponce, Isabelle [> > > >]
Streel, Maurice mailto [Université de Liège - ULg > > Département de géologie >]
Review of Palaeobotany & Palynology
Yes (verified by ORBi)
[en] New fertile specimens of Archaeopteris roemeriana from Upper (but not uppermost) Famennian strata of Belgium have been studied. Crowded sporangia are borne on non-laminate, three times bifurcate fertile leaves helically arranged around the fertile ultimate axes. Vegetative leaves occur both proximal and distal to the fertile leaves. Heterospory is demonstrated with miospores belonging to the Geminospora-Aneurospora complex and macrospores most probably to Contagisporites genus. The established morphological traits allow us to substantiate a synonymy between A. roemeriana and A. halliana. The apparent dominance of A. halliana on the eastern side of the Acadian mountains during Late Famennian times is discussed.

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