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LOT 2468
Natural History - Knightia Fossil Fish
EOCENE PERIOD, 56-33 MILLION YEARS B.P.
7 x 5 in. (345 grams, 18 x 12.5 cm).
In a rectangular matrix. [No Reserve]
ProvenanceFrom 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.
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AUCTIONS:
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Natural History - Giant Elephant Bird Eggshell Group
Pleistocene Period, 2.6 million-11,700 years B.P.Sold for (Inc. bp): £47
Comprising four sections from the Aepyornis eggs. 60 grams total, 40-63 mm
From Madagascar. Acquired 1950s-1960s. From an old Bristol, UK, paleontological collection. -
Natural History - Fossil Morocops Trilobite Group
Devonian Period, 417-354 million years B.P.Sold for (Inc. bp): £26
Comprising three Morocops (Barrandeops) sp. on a matrix. 275 grams total, 58-61 mm
From the Atlas Mountains, Hamar Laghdad Formation, Prgain, Alnif, Morocco, North Africa. From an old Oxford, UK, paleontological collection. -
Natural History - Mixed Crystal Specimen Display Group
Sold for (Inc. bp): £26
Comprising: specularite; mini geode halves; citrine porcupine; pyrite; pink and green fluorite specimens; each held in a white card collector's tray with accompanying label. 420 grams total, 33-50 mm
Very fine condition.
Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's).