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Dernbachia
 Tree Fern Dernbachia brasiliensis Bieland, Maranhao Province, Brazil Pedra de Fogo Formation Permian 7.5 cm x 7 cm |
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| Transition zone between the central vascular tissue and surrounding leaf traces in Dernbachia brasiliensis. |
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| Close-up of a leaf trace in Dernbachia brasiliensis can be seen below. |
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