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LOT 2849
Fossil Adult Woolly Mammoth Tusk Section
DEVENSIAN PERIOD, 110,000-12,000 YEARS B.P.
31 1/8 in. (5.46 kg, 79 cm).
A large, curving section of Mammuthus primigenius tusk, showing the internal layering; stabilised. [No Reserve]
ProvenanceFrom the North Sea.
Acquired from Milton Keynes Geological Society in 1999.
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 Deep Purple Amethyst Crystal Geode Section Group [3]
Sold for (Inc. bp): £13
Each with large purple pyramidal crystals. 1.06 kg total, 8-13.6 cm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK. -
Knightia Fossil Fish
Eocene Period, circa 58-36 million years B.P.Sold for (Inc. bp): £39
A rounded matrix with two Knightia alta fish with faint remains of another one. 62 grams, 91 mm
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. -
Mesosaurus Fossil Reptile Skeleton
Lower Permian Period, circa 285 million years B.P.Sold for (Inc. bp): £546
A complete preserved Mesosaurus brasiliensis skeleton in limestone. 1.11 kg total, 26.7 cm
From the Irati-Formation, Parana Delta, Brazil. From a Berkshire, UK, collection.
The mesosaurs were fast swimming predators which lived in fresh water, probably preying on small fish, insects and other aquatic invertebrates.
