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LOT 2183
Natural History - Polished Douvilleiceras Fossil Ammonite Group
MIDDLE CRETACEOUS PERIOD, CIRCA 150 MILLION YEARS B.P.
1 5/8 - 2 in. (160 grams total, 42-52 mm).
Comprising three Douvilleiceras sp. specimens (sometimes known as a Goat Horn), polished to reveal rich calcites and suture patterns. [3, No Reserve]
ProvenanceFrom the North-East Coast of Madagascar in the jungles of Mahajanga.
Acquired 1950s-1960s.
From an old Bristol, UK, palaeontological collection.
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AUCTIONS:
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LOT 2183
Natural History - Polished Douvilleiceras Fossil Ammonite Group
Sold for (Inc. bp): £33
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Natural History - Desert Rose Specimen Group [100]
Sold for (Inc. bp): £7
Comprising mainly roughly spherical selenite crystal clusters. 490 grams total, 15-32 mm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
![Natural History - Mixed Cut and Polished Agate Slice Collection [10]](https://timelineauctions.com/upload/images/items/small/208004-s.jpg)
Natural History - Mixed Cut and Polished Agate Slice Collection [10]
Sold for (Inc. bp): £26
Each with attractive banding, some with the internal cavity filled with crystals; some with enhanced colour. 1.06 kg total, 9.8-12 cm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Knightia Fossil Fish
Eocene Period, circa 56-33 million years B.P.Sold for (Inc. bp): £46
The Knightia alta specimen on a rectangular sandstone matrix. 140 grams, 10 cm
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.
