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Petrified Sea Gardens, also known as Ritchie Park, is a National Historic Landmark. It preserves an area of ancient stromatolites in a Cambrian rock layer. Stromatolites "were first recognized, discovered, and interpreted in North America" here, on property owned by Robert F. Ritchie, a stonemason and amateur geologist, who detected them in 1922 and opened a park to show them to the public in 1924.〔 and 〕 Stromatolites, which are marine algae growths, were unknown, and it was a puzzle whether these fossils were organic or inorganic products. James Hall (1811–1898), the first State Paleontologist of New York, identified them as being organic and placed stromatolites in a new genus.〔Kluessendorf, p.__〕 Pioneering female paleontologist Winifred Goldring (1888–1971), "who was the fourth State Paleontologist of New York,...wrote the most exhaustive study on these ancient stromatolites."〔 The site was a childhood inspiration for Stephen Jay Gould who went on to become "one of the most famous paleontologists of the twentieth century".〔Kluessendorf, p.15〕 It was declared a National Historic Landmark in 1999,〔 by which date it had already been named a National Natural Landmark.〔(NPS NNL Summary Page )〕 The site was open as an educational site operated by a non-profit, the Friends of Petrified Sea Gardens〔NRHP, p. 15〕 until 2006. It is currently closed to the public. It is located at 42 Petrified Sea Gardens Road, about .5 mile north of N.Y. 29, west of Saratoga Springs, New York.〔 ==See also== *James Hall Office, also a National Historic Landmark *List of National Historic Landmarks in New York *National Register of Historic Places listings in Saratoga County, New York 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Petrified Sea Gardens」の詳細全文を読む スポンサード リンク
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