A fossilized Crinoid head (Pentremitidea goldringae) photographed by an optical scanning microscope. This type of fossil is from the middle Devonian period (about 450 million years old), and was collected in the Genesee Valley Region of New York State. Crinoids are echinoderms.

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TOP22080932

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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