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LOT 2382
Natural History - Fossil Brittle Star Group
ORDOVICIAN AGE, CIRCA 450 MILLION YEARS B.P.
3 - 3 3/4 in. (330 grams total, 75-95 mm).
Comprising three Ophiuroidea sp. on irregular matrices. [3, No Reserve]
ProvenanceFrom El Kaid Errami, Tafilalt, Morocco.
From an old German collection.
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AUCTIONS:
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Natural History - Knightia Fossil Fish
Eocene Period, circa 58 million years B.P.Sold for (Inc. bp): £78
The rectangular matrix containing a Knightia alta fish. 233 grams, 14.6 cm
From Wyoming (Green River Formation), USA. Acquired during 1980s. From the Pradi Collection, Boston, U.S.A.
Seasonally some 58 million years ago, in the Green River region of Wyoming, torrential rains fell in the mountains. They flowed down the mountain sides, forming wide shallow lakes in the valley below. During the dry season, these lakes would dry up due to evaporation (as happens in 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 entombed all these fish. At a much later date, volcanic activity uplifted this area to expose the fossils. -
Natural History - Fossil Ginko Leaf
Carboniferous Period, 359-299 million years B.P.Sold for (Inc. bp): £39
The light-coloured specimen on an irregular matrix. 48 grams, 80 mm
Ex Cambridgeshire, UK, collection. -
Natural History - Fossilised Wood Slice Pair
Triassic Period, circa 230 million years B.P.Sold for (Inc. bp): £20
Both polished to both sides. 610 grams total, 9.8-10.7 cm
From Madagascar. Acquired 1950s-1960s. From an old Bristol, UK, palaeontological collection.
