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LOT 2478
Natural History - Cut and Polished Fossil Ammonite
JURASSIC PERIOD, 200-145 MILLION YEARS B.P.
3 1/4 in. (210 grams total, 83 mm each).
The specimen cut through the middle to reveal the dividing gas chambers with crystal formations; some minor iridescence to outer surfaces. [2, No Reserve]
ProvenanceFrom a Lincolnshire, UK, collection.
CONDITIONTimeLine Auctions follows a vetting process to ensure the authenticity and legality of all items, reinforcing our commitment to integrity and responsible trading. Each antiquity, antique, and coin lot undergoes thorough examination by a vetting committee of at least ten external specialists, professional trade association members, scientists, and archaeologists: Our Vetting Process
AUCTIONS:
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Natural History - Woolly Mammoth Bone Bead Necklace String
Devensian Period, 110,000-12,000 years B.P.Sold for (Inc. bp): £72
Restrung using polished Mammuthus primigenius bone beads. 93 grams, 64 cm long
Ex private collection of a Shropshire, UK, gentleman, 1990s. -
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Natural History - Knightia Fossil Fish Group
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £52
Comprising seven complete and two partial Knightia alta fossil fish in a rectangular matrix. 373 grams, 15.3 x 9.8 cm
Fine condition.
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. -
Natural History - Woolly Mammoth Fossil Tusk Section
Pleistocene Period, circa 40,000 years B.P.Sold for (Inc. bp): £20
With some attractive patterning. 122 grams, 20 cm
From the North Sea. From an old Bristol, UK, collection.
