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Hello to all. This is my collection of flora from the Carboniferous period. This topic will be filled gradually - there is a lot of material. All material originates from the Araukarite Formation of the Gzhel Stage of the Upper Pennsylvania Carboniferous period (303.4 Ma). Unless otherwise specified, it means that the default sample is from this formation. The type of substitution is silicification (sometimes with ferruginization), sometimes with quartz crystals on the surface of the samples. Enjoy watching Part 1. Sample 1. Part of a branch of small diameter with a