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WHERE TO BUY

Science biannual & sales Naturalat Christie’s,History 85 Old Brompton Road, London, SW7 3LD. 020 7930 6074; christies.com Garden & Natural History sales held three times a year, and annual Evolution sale on 21st Nov, at Summers Place Auctions, The Walled Garden, Stane Street, Billingshurst, West Sussex, RH14 9AB. 01403 331331; summersplaceauctions.com Natural History & Taxidermy quarterly sales at Tennants, Harmby Road, Leyburn, North Yorkshire, DL8 5SG. 01969 623780; tennants.co.uk Natural History biannual sales at Bonhams, 7601 Sunset Blvd, Los Angeles, CA 90046, USA. +1 32 38 50 75 00; bonhams.com Dale Rogers Ammonite, 77 Pimlico Rd, London, SW1W 8PH. 020 7881 0592; dalerogersammonite.com