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LOT 2123
Natural History - Knightia Fossil Fish Plate
EOCENE PERIOD, CIRCA 56-33 MILLION YEARS B.P.
6 1/4 x 5 1/8 in. (507 grams, 16 x 13 cm).
The square sandstone matrix with two Knightia alta fossil fish specimens. [No Reserve]
ProvenanceFrom a Lincolnshire, UK, collection.
FootnotesIn 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.
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AUCTIONS:
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LOT 2123
Natural History - Knightia Fossil Fish Plate
Sold for (Inc. bp): £85
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Natural History - Dyed Agate on Stand
Sold for (Inc. bp): £72
The teardrop-shaped body cut and polished to reveal the internal quartz filled cavity; in enhanced blue colour. 311 grams total, 13.5 cm high
From a Lincolnshire, UK, collection. -
Natural History - Oxynotum Zone Fossil Cluster
Jurassic Period, circa 170 million years B.P.Sold for (Inc. bp): £33
The matrix set with a montage of ammonites, bivalves and a belemnite. 66 grams, 50 mm
From Tuffley, Gloucestershire, UK. From a Gloucestershire, UK, collection. -
Natural History - Polished Fossil Goniatite Book Ends
Devonian Period, circa 417-354 million years B.P.Sold for (Inc. bp): £39
Cut and polished from a single fossiliferous block and each side set with a large Goniatite sp. specimen. 3.4 kg total, 15.3 cm high each
From a Cambridgeshire, UK, collection.