Didymograptus, graptolite fossil. Graptolites are an extinct group of marine, colonial animals. Known for their 'tuning-fork' shape, they formed part of ancient plankton. This specimen dates from the Ordovician. It is part of the collections held at the Natural History Museum, London, UK.

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TOP12442115

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達志影像

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RM

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須由TPG 完整授權

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