TY  - SER
AU  - Berthaud, B. Meyer
AU  - Wendt, J. 
AU  - Galtier, J. 
TI  - First record of a large callixylon trunk from the late devonian of Gondwana
KW  - Callixylon trunk - Southern Morocco
KW  - Devonian
KW  - Gondwana
KW  - Stamm
KW  - Gondwana land
N2  - A 5 m long permineralized trunk from the Upper Kellwasser member of southern Morocco represents the first record of a large trunk of an identifiable species of Callixylon, C. erianum, from Gondwana. This occurrence constitutes the most reliable evidence based on plant megafossils for a floral connection between Laurussia and Gondwana in late Devonian times and for a proximity of these continents in Famennian times. The potential of this trunk for studies of the architecture and growth patterns of the earliest trees with a gymnospermous type of arborescent habit is discussed
ER  -