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LOT 2504
Natural History - Knightia Fossil Fish Plate
EOCENE PERIOD, CIRCA 56-33 MILLION YEARS B.P.
4 in. (70 grams, 10.5 cm).
A roughly oval matrix with a Knightia alta fossil fish. [No Reserve]
ProvenanceAcquired on the UK art market.
Property of a Essex, UK, collector.
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 - Large Historic 'Blackdean, Durham' Fluorite with Galena Mineral Specimen
Sold for (Inc. bp): £98
Beautiful specimen displaying lead-grey galena crystals with a coating of fine purple cubic fluorite, collection number 542; purchased for £50.00 from Gregory, Bottley & Lloyd, in the 1980s, with an old label. 1.53 kg, 14 cm
Acquired on the UK mineral and fossil market, since 1970. From the historic mineral collection of Richard Valentine Cain, London, UK, thence by descent. Accompanied by an original historic index file card. -
Natural History - Polished Amethyst Crystal Pebble Group [100]
Sold for (Inc. bp): £39
Displaying attractive banding, the colouring varying from light to dark purple. 232 grams total, 12-30 mm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Amber with Insect Inclusions
Oligocene Period, circa 45 million years B.P.Sold for (Inc. bp): £33
A specimen of polished amber with insect inclusion. 2.23 grams, 25 mm
Ex private UK collection formed in the 1980s. Property of an East Sussex, UK, teacher.