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The unique aspect of species belonging to the family araucariaceae is that the orthotropic stems with their bud traces, and the plagiotropic branches with their bud traces, remain permanently orthotropic and plagiotropic, respectively, regardless of any orientation or treatment imposed on them [17].
Wood with these features is classified as Araucarioxylon, a very common Triassic-Recent form genus, which bears a close similarity to the woods of the extant conifer family Araucariaceae (Greguss 1972).