The Virtual Petrified Wood Museum. Dedicated to the Exhibition and Educational Study of Permineralized Plant Material
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Jurassic Period: 199.6-145.5 Million Years Ago
Gallery: Cerro Cuadrado

Pararaucaria patagonica cones and an aerial lignotuber glued onto a stem. The best scientific evidence at this time indicates that these "mushroom-shaped" structures are aerial lignotubers, which were vegetative reproductive structures that arose in the axils of leaves in response to injury, such as fire (Dernbach, 2002).

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