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_900x900.jpg "Natural History - Large Fossil Ammonite")
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LOT 2693
Natural History - Large Fossil Ammonite
JURASSIC PERIOD, TOARCIAN STAGE, CIRCA 180 MILLION YEARS B.P.
4 1/8 - 4 1/2 in. (1.34 kg total, 10.5-11.5 cm).
Hildoceras sp. in an irregular matrix nodule. [2, No Reserve]
ProvenanceFrom Whitby, UK.
From a Lincolnshire, UK, collection.
TimeLine Auctions follows a vetting process to ensure the authenticity and legality of all items, reinforcing our commitment to integrity and responsible trading. Each antiquity, antique, and coin lot undergoes thorough examination by a vetting committee of at least ten external specialists, professional trade association members, scientists, and archaeologists: Our Vetting Process
AUCTIONS:
TimeLine is a leading auction house specialising in antiquities, ancient art, collectables, natural history, coins, medals, and books. Our auctions offer museums, collectors, historians, and enthusiasts the opportunity to acquire unique and historically significant pieces.
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Natural History - Bead Necklace String
20th century A.D.Sold for (Inc. bp): £39
Composed of graduated polished coral or glass beads of drum type. 800 grams, 49 cm long
UK gallery, early 2000s. -
![Natural History - Boxed Polished Amethyst Crystal Obelisk Group [3]](https://timelineauctions.com/upload/images/items/small/211422-s(1).jpg)
Natural History - Boxed Polished Amethyst Crystal Obelisk Group [3]
Sold for (Inc. bp): £20
Each freestanding and with bevelled edges. 84 grams total, 60-70 mm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
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Natural History - Knightia Fossil Fish Plate
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £78
The rectangular matrix containing four Knightia alta sp. fish. 955 grams, 24.2 cm
From the Green River Formation, Wyoming, USA. Ex 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.
