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LOT 2308
Natural History - Large Kalahari Desert Wind Stone
3 3/4 in. (609 grams, 96 mm).
A wind-rounded pebble in a hollowed out 'nest'; with a hessian draw-ribbon pouch. [No Reserve]
ProvenanceFrom the Kalahari Desert, Southern Africa.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's).
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AUCTIONS:
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Natural History - Polished Copal with Insects
Over 3 million years B.P.Sold for (Inc. bp): £26
Containing several insects and other inclusions. 11.2 grams, 10.3 cm
From Madagascar. Acquired 1950s-1960s. From an old Bristol, UK, palaeontological collection. -
Natural History - Very Large Fossil Orthoceras Sculpture
Devonian Period, circa 417-354 million years B.P.Estimate: £400 - 600 (+bp*)
Opening Bid: £200
Formed as a freestanding three-dimensional formation of torpedo-shapes on a chiselled matrix; each 'torpedo' with multiple Orthoceras sp. fossils, some showing the cross-section of the creature. 52.3 kg, 113.5 cm
From Morocco, North Africa. Property of a Cambridgeshire, UK, gentleman. -
Natural History - Knightia Fossil Fish
Eocene Period, circa 58 million years B.P.Sold for (Inc. bp): £26
Knightia alta specimen on a rectangular matrix. 273 grams, 13 cm
From Wyoming (Green River Formation), USA. From an old Bristol, 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.
