The Virtual Petrified Wood Museum.  Dedicated to the Exhibition and Educational Study of Permineralized Plant Material
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Permian: 299-251 Million Years Ago
Gallery: Brazil, South America
Tree Fern
Psaronius sinuosus
Bieland, Maranhao Province, Brazil
Pedra de Fogo Formation
9 cm x 7 cm
Below one can see the tranistion zone between the central vascular tissue and root mantle of Psaronius sinuosus.

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