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LOT 2689
Fossil Green River Fish
EOCENE PERIOD, CIRCA 58-36 MILLION YEARS B.P.
3 3/8 - 3 5/8 in. (220 grams total, 87-92 mm).
Comprising three rounded matrices, each with a Knightia alta specimen. [3, No Reserve]
ProvenanceFrom Wyoming (Green River Formation), 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 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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Cut and Polished Fossil Ammonite Half
Jurassic Period, Toarcian Stage, circa 184.2-174.7 million years B.P.Sold for (Inc. bp): £13
Dactylioceras commune with the inner face polished to display internal gas chamber. 7.68 grams, 36 mm
From a London, UK, gentleman's collection of ancient pottery and artefacts, 1990s. -
Cut and Polished Agate Coaster Pair
Sold for (Inc. bp): £26
Comprising two translucent polished slices with black and orange banding. 104 grams total, 72 mm each
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
Unpolished Natural Amber Group
Oligocene Period, circa 45 million years B.PSold for (Inc. bp): £33
A large group of unpolished amber pieces, each pierced through the centre for stringing. 49 grams total, 8-21 mm
Ian Wilkinson collection, Nottinghamshire, UK, formed since 1985.
