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LOT 2497
Natural History - Iridescent Rainbow Shell Ammonite
CRETACEOUS PERIOD, CIRCA 113-100 MILLION YEARS B.P.
2 7/8 in. (100 grams, 72 mm).
Cleoniceras besairiei with large portions of the shell with rainbow iridescence. [No Reserve]
ProvenanceFrom Madagascar.
Acquired 1950s-1960s.
From an old Bristol, UK, palaeontological collection.
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AUCTIONS:
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Natural History - Green River Fossil Fish Group
Eocene Period, circa 56-33 million years B.PSold for (Inc. bp): £39
Two Green River fish specimens Diplomystus sp. in a matrix. 437 grams, 12.5 x 14.2 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. -
![Natural History - Grade A Cut and Polished Agate Slice Collection [3]](https://timelineauctions.com/upload/images/items/small/211411-s.jpg)
Natural History - Grade A Cut and Polished Agate Slice Collection [3]
Sold for (Inc. bp): £4
In enhanced purple and blue colour. 376 grams total, 11.5-14.5 cm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Large Citrine Crystal Geode Display Section
Sold for (Inc. bp): £104
Cut to a rough square-shape with well-formed orange crystals. 1.02 kg, 14.3 cm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's).
