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LOT 2421
Natural History - Shell and Fossil Group
UPPER DEVONIAN PERIOD, CIRCA 419-358 MILLION YEARS B.P.-20TH CENTURY A.D.
2 - 7 1/8 in. (890 grams total, 5.1-18 cm).
Including a Phacops rana trilobite and other types. [9, No Reserve]
ProvenanceFrom a collection acquired on the UK art market from various auction houses and collections mostly before 2000.
From an important Cambridgeshire estate; thence by descent.
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AUCTIONS:
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![Natural History - Desert Rose Gypsum Specimen Group [100]](https://timelineauctions.com/upload/images/items/small/211343-s.jpg)
Natural History - Desert Rose Gypsum Specimen Group [100]
Sold for (Inc. bp): £13
Comprising one hundred round examples, some with multiple clusters. 484 grams total, 16-32 mm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Knightia Fossil Fish Group
Eocene Period, circa 56-33 million years B.P.Sold for (Inc. bp): £111
Comprising three matrices with Knightia eocaena specimens. 123 grams total, 73-93 mm
From Lindgren Quarry, 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. -
Natural History - Fossil Diplomystus Fish
Eocene Period, circa 58 million years B.PSold for (Inc. bp): £59
Diplomystus sp. specimen on a matrix. 398 grams, 15.2 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.
