The plant Leclercqia (Lycopsida) in Gondwana: implications for reconstructing Middle Devonian palaeogeography

in Geological Magazine (2003), 140(2), 119-130

Abundant and well-preserved material of the ligulate lycopsid genus Leclercqia is reported from a new Middle Devonian locality in northeastern Queensland (Australia). The plants occur in a chert horizon ... [more ▼]

Abundant and well-preserved material of the ligulate lycopsid genus Leclercqia is reported from a new Middle Devonian locality in northeastern Queensland (Australia). The plants occur in a chert horizon in the Storm Hill Sandstone of the Dosey-Craigie Platform. Lithological data and conodont analyses combined with information from in situ spores provide an age for the plant levels ranging from Eifelian, possibly Middle Eifelian, to Early Givetian. Plant taxonomic identification is based on vegetative and fertile stems that display both external morphology and anatomy. This material represents the best documented occurrence of Leclercqia outside Laurussia and possibly the earliest in Gondwana; it provides evidence that colonization of Gondwana by the species L. complexa was contemporaneous to that of Siberia and Kazakhstan. Analysis of the distribution patterns of L. complexa suggests that it was adapted to a wide range of environments, but within certain limits which we hypothesize to be those of a climatic belt. Such considerations support previous studies using other biological data, such as faunas and palynomorphs, for reconstructing Devonian palaeogeography. They favour a close proximity of Laurussia and Gondwana rather than the occurrence of a wide ocean separating the two palaeocontinents in Middle Devonian times. [less ▲]

Découverte du genre Rellimia Leclercq & Bonamo (Aneurophytales) en Afrique: un apport à la paléogéographie du Dévonien Moyen.

Conference (2002)

The Middle Devonian plant Leclercqia (Lycopsida) in eastern Gondwana

Conference (2002)

An Early Devonian flora, including Cooksonia from the Paraná Basin (Brazil)

in Review of Palaeobotany and Palynology (2001), 116

Aarabia, a new Early Devonian vascular plant from Africa (Morocco).

in Review of Palaeobotany and Palynology (2001), 116

Quelques spécimens exceptionnels de premières plantes terrestres découvertes au Brésil (Bassin du Paraná, Dévonien basal)

in Geo-Eco-Trop (2001), 25

La Forêt fossile d'Overlaar, Belgique (transition Paléocène-Eocène).

in O.F.P. Information (2000), 25

Lower Devonian plant mesofossils from Paraná Basin, Brazil: general introduction, description, age significance and correlation with floral succession from Laurussia and Gondwana.

in Rodrigues, M.A.C.; Pereira, E. (Eds.) : Ordovician-Devonian palynostratigraphy in Western Gondwana: update, problems and perspectives. (1999)

A Namurian A (Silesian) permineralised flora from the "Carrière du Lion" at Engihoul (Belgium).

in Review of Palaeobotany and Palynology (1999), 107

Agaristoxylon garennicum gen. et sp. nov., an arborescent Ericaceae from the Belgian Upper Paleocene: palaeoenvironmental implications.

in Review of Palaeobotany and Palynology (1999), 104