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My thanks are due to Mr. R. V. Sitholey for the photographs illustratint this paper.
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Sahni, B. Indian silicified plants. Proc. Indian Acad. Sci. 14, 489–501 (1941). https://doi.org/10.1007/BF03051464
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DOI: https://doi.org/10.1007/BF03051464