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A Crinoid (stone-lily) plaque from the Holzmaden region of Jurassic Germany, the 4ft 11in x 2ft 4 1/2in (1.50m x 75cm) fossil doubled its lower estimate, selling at £9800. The winning bid came from a US private buyer, a number of whose countrymen were also buying - leading to hopes that Americans are back as a bidding force.