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LOT 1772
Natural History - Fossil Starfish in Matrix
ORDOVICIAN PERIOD, CIRCA 485.4-443.8 MILLION YEARS B.P.
12 in. (1.6 kg, 30.5 cm).
A pair of Ophiuroides sp. starfish together with a Carpoid and other fossils on an irregular matrix.
ProvenanceEl Caid Romi, Morocco, North Africa.
Old Bristol collection.
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AUCTIONS:
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Natural History - Cut and Polished Lapis Lazuli Tile Group
Sold for (Inc. bp): £72
A group of three rectangular lapis lazuli tiles with polished upper faces. 229 grams total, 77-80 mm
Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Polished Goniatite and Orthoceras Display
Devonian Period, 417-354 million years B.P.Sold for (Inc. bp): £98
A free-standing display set with a polished fossil Goniatite sp. and two Orthoceras sp. specimens. 2.1 kg, 25 cm high
From Morocco, North Africa. Ex Cambridgeshire, UK, collection. -
Natural History - Knightia Fossil Fish
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £52
A pair of Knightia alta fossil fish in a matrix. 336 grams, 12.6 x 11 cm
From Wyoming, Green River Formation, U.S.A. Acquired during the 1980s. From the Pradi Collection, Boston, U.S.A.
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.
