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LOT 2015
Natural History - Polished Whitby Dac Fossil Ammonite Group
JURASSIC PERIOD, 199-145 MILLION YEARS B.P.
2 7/8 - 3 3/4 in. (470 grams total, 73-94 mm).
A trio of Whitby Dac fossil ammonites, each displaying one polished face. [3, No Reserve]
ProvenanceFrom Whitby Dac.
Ex Lincolnshire, UK, collection.
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AUCTIONS:
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LOT 2015
Natural History - Polished Whitby Dac Fossil Ammonite Group
Sold for (Inc. bp): £13
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Natural History - Cut and Polished Fluorite Oblique Pyramid
Sold for (Inc. bp): £13
A cut and polished fluorite oblique pyramid; held in a white card collector's tray. 130 grams, 48 mm
From China. Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Fossil Hexagonaria Coral
Devonian Period, circa 350 million years B.P.Sold for (Inc. bp): £59
A section of fossilised Hexagonaria coral. 196 grams, 85 mm
From the Western Sahara, Morocco, North Africa. From an old Oxfordshire, UK, fossil and mineral collection. -
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Natural History - Fossil Diplomystus Fish
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £46
A fossil Diplomystus sp. fish in a matrix. 500 grams, 16.5 x 11.7 cm
From the Green River Formation, Lincoln County, Wyoming, U.S.A. From an old Lincoln, UK, collection.
Seasonally, some 56 million years ago, in the Green River Region of Wyoming, torrential rains fell on the mountains. The rain flowed down the mountain sides, forming wide shallow lakes in the valley below. During the dry season, these lakes evaporated (similar to certain parts of Africa today). Millions of fish died in this short period of time. This climatic cycle happened over a 20-thousand-year period. Layer upon layer of mud was deposited over these years, entombing huge numbers of fish. At a much later date volcanic activity uplifted this area to expose their fossils.
