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![Natural History - Brown Obsidian Natural Glass Specimen Group [100]](https://timelineauctions.com/zoom_images/zoomthumb/2/1/211374_900x900.jpg "Natural History - Brown Obsidian Natural Glass Specimen Group [100]")
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LOT 2180
Natural History - Brown Obsidian Natural Glass Specimen Group [100]
3/4 - 1 3/4 in. (878 grams total, 22-46 mm).
Comprising cut dark brown to black samples. [100, No Reserve]
ProvenanceEx Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's).
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.
LOT 2180
Natural History - Brown Obsidian Natural Glass Specimen Group [100]
Sold for (Inc. bp): £26
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Natural History - Fossil Ginko Leaf
Carboniferous Period, 359-299 million years B.P.Sold for (Inc. bp): £169
On an irregular matrix. 102 grams, 75 mm
From the Sentinel Butte Formation, Morton County, North Dakota, USA. From a Cambridgeshire, UK, collection. -
Natural History - Fossil Pterosaur, Sauropod, Mosasaur and Triceratops Dinosaur Tooth Collection
Cretaceous Period, 145-65 million years B.P.Sold for (Inc. bp): £156
Comprising a single example from each dinosaur, the Triceratops horridus tooth with an identification card. 40 grams total, 17-48 mm
From Morocco, North Africa. From the private collection of Mr A Hills, Kent, UK. -
Natural History - Knightia Fossil Fish
Eocene Period, circa 56-33 million years B.P.Sold for (Inc. bp): £46
Knightia alta specimen on a rectangular matrix. 397 grams, 13.3 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.
