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LOT 2379
Natural History - Polished Douvilleiceras Ammonite Group
MIDDLE CRETACEOUS PERIOD, 150 MILLION YEARS B.P.
1 3/4 - 2 in. (125 grams total, 45-49 mm).
Comprising three polished specimens with clean centres. [3, No Reserve]
ProvenanceFrom the North-East Coast of Madagascar in the jungles of Mahajanga.
Acquired 1950s-1960s.
From an old Bristol, UK, paleontological collection.
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AUCTIONS:
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LOT 2379
Natural History - Polished Douvilleiceras Ammonite Group
Sold for (Inc. bp): £91
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Natural History - Knightia Fossil Fish in Matrix
Eocene Period, 58-33 million years B.P.Sold for (Inc. bp): £26
Displaying a fossil Knightia sp. fish. 553 grams, 15 cm
Acquired during the 1980s. From the Pradi Collection, Boston, U.S.A.
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 - Knightia Fossil Fish in Matrix
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £33
Comprising a Knightia alta specimen on a sedimentary matrix. 331 grams, 12.7 cm
From Wyoming, Green River Formation, U.S.A. Acquired during the 1980s. From the Pradi Collection, Boston, U.S.A.
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 Otodus Shark Tooth
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £21
With good enamel; on a sandstone matrix. 455 grams, 10.9 cm
From a Cambridgeshire, UK, collection.
