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LOT 2735
Fossil Platyostoma Gastropod on Matrix
SILURIAN PERIOD, CIRCA 430 MILLION YEARS B.P.
3 5/8 in. (242 grams, 92 mm).
Platyostoma niagarensis set on an irregular matrix. [No Reserve]
ProvenanceAcquired Hunstanton, UK.
From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.
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AUCTIONS:
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Large Historic Spinel (209) Crystal Sample
Sold for (Inc. bp): £33
A conical blue specimen with pencilled '209' to one side. 48 grams, 56 mm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
Fossil Fish in Matrix
Eocene Period, circa 58-36 million years B.P.Sold for (Inc. bp): £33
Comprising two complete Knightia alta specimens and remains of a third fish. 622 grams, 13.1 x 13.7 cm
From 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. -
Large Pink Dolomite Crystal Display Slab
Sold for (Inc. bp): £7
An irregular slab of light pink crystals with dusting of marcasite. 1.05 kg, 13.6 cm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
