Petrified fern. Polished section of a fossil of the trunk of the fern Palaeosmunda williamsonii. This specimen is approximately 4 centimetres across. It is from Rockhampton, Queensland, Australia, and dates from the Permian (250 to 299 million years ago). It is part of the collections held at the Natural History Museum, London, UK.

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Creative#:

TOP11715836

Source:

達志影像

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RM

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須由TPG 完整授權

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