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LOT 2056
Natural History - Knightia Fossil Fish
EOCENE PERIOD, CIRCA 56-33 MILLION YEARS B.P.
4 5/8 in. (200 grams, 11.7 cm).
Knightia alta specimen on a rectangular matrix. [No Reserve]
ProvenanceFrom Wyoming (Green River Formation), USA.
Acquired during 1980s.
From the Pradi Collection, Boston, U.S.A.
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 Ulinta, 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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Natural History - Fossil Wood Section
Late Triassic Period, circa 225 million years B.P.Sold for (Inc. bp): £13
Cut to a freestanding shape with two polished faces. 703 grams, 10.4 cm
From a Lincolnshire, UK, collection. -
Natural History - Extinct Fossil Shark and Other Tooth Collection
Cretaceous-Eocene Period, 70-50 million years B.P.Sold for (Inc. bp): £104
Comprising specimens of different sizes, including examples retaining some or most of the root, enamel and/or serration. 940 grams total, 3-31 mm
Acquired 1990s-early 2000s. East Anglian private collection. -
Natural History - Historic Vanadinite Crystal Formation
Sold for (Inc. bp): £52
Comprising well-formed red-brown prismatic crystals on botryoidal haematite. 59 grams, 45 mm
Collected in person from various parts of the world mainly between 1957-1966. From the private mineral collection of Stephen Atkinson, Harpenden, UK. Accompanied by a copy of a letter from the vendor giving details of him collecting these minerals throughout his life.
