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LOT 2319
Knightia Fossil Fish Plate Group
EOCENE PERIOD, CIRCA 58-36 MILLION YEARS B.P.
2 3/4 - 3 in. (165 grams total, 70-74 mm).
Comprising three roughly oval matrices with Knightia alta specimens. [3, No Reserve]
ProvenanceFrom Wyoming, USA.
From a Lincolnshire, UK, collection.
In southwest Wyoming (and parts of Colorado and Utah), in the Green River Formation, are found some of the world's most outstanding specimens of fossil fish. The Green River system was composed of three lakes: Lake Uinta, Lake Gosiute and Fossil Lake. These Eocene lakes lay in a series of intermountain basins formed by geological events that uplifted the Rocky Mountains during the early Tertiary time. The climate was much different from the desert-like climate of this area today. Both the fauna (crocodiles, alligators, boa constrictors and some subtropical fish families) and the flora (such as large palm trees) indicate a climate much like that found along the Gulf Coast today. Large amounts of ash found in the sediments indicate that volcanoes were particularly active at this time.
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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Large Amethyst and Quartz Crystal Display
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Opening Bid: £1,100
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From Artigas, Uruguay. Property of a London lady. -
Cut and Polished Fossil Sponge in Flint Nodule
Cretaceous Period, circa 80 million years B.P.Sold for (Inc. bp): £13
An oval pebble cut in half and polished to a high degree with a small crystal-lined cavity on one side. 315 grams total, 80-81 mm
From Beachy Head, Sussex, UK. From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent. -
Agate and Amethyst 'Window' Display
Cretaceous Period, circa 140-120 million years B.P.Estimate: £1,800 - 2,400 (+bp*)
Current Winning Bid: £1,100
Polished geode section with six rounded openings creating windows to the inside of the geode, the internal walls lined with vibrant purple amethyst crystals; mounted on a custom-made display stand. 3.15 kg, 24.5 x 16 x 11 cm, 35.5 cm including stand
From Artigas, Uruguay. Property of a London lady.