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LOT 2243
Natural History - Knightia Fossil Fish Group
EOCENE PERIOD, CIRCA 56-33 MILLION YEARS B.P.
2 7/8 - 3 5/8 in. (123 grams total, 73-93 mm).
Comprising three matrices with Knightia eocaena specimens. [3, No Reserve]
ProvenanceFrom Lindgren Quarry, 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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Natural History - Cut and Polished Agate Section Group [3]
Sold for (Inc. bp): £7
Comprising three freestanding examples, each cut and polished to reveal internal banding, two with enhanced colour. 1.68 kg total, 11.2-12.2 cm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Fossil Insects in Matrix Collection
Cretaceous Period, circa 145-65 million years B.P.Sold for (Inc. bp): £7
Each in a rounded sandstone matrix, possibly grasshoppers. 340 grams total, 8-12.7 cm
From the Crato Formation, Brazil. From a Lincolnshire, UK, collection. -
Natural History - Fossil Brittle Star
Middle Ordovician Period, circa 450 million years B.P.Sold for (Inc. bp): £65
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