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_900x900.jpg "Natural History - Mixed Crystal Specimen Display Group")
_200x200.jpg "Natural History - Mixed Crystal Specimen Display Group")
.jpg "Natural History - Mixed Crystal Specimen Display Group")
LOT 2545
Natural History - Mixed Crystal Specimen Display Group
1 1/4 - 2 in. (420 grams total, 33-50 mm).
Comprising: specularite; mini geode halves; citrine porcupine; pyrite; pink and green fluorite specimens; each held in a white card collector's tray with accompanying label. [7, No Reserve]
ProvenanceMineral 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.
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Natural History - Knightia Fossil Fish
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £33
In a rectangular matrix. 345 grams, 18 x 12.5 cm
Fine condition.
From Wyoming, Green River Formation, U.S.A. Acquired during the 1980s. From the Pradi Collection, Boston, U.S.A.
Seasonally, some 56 million years ago, in the Green River Region of Wyoming, torrential rains fell on the mountains. The rain flowed down the mountain sides, forming wide shallow lakes in the valley below. During the dry season, these lakes evaporated (similar to certain parts of Africa today). Millions of fish died in this short period of time. This climatic cycle happened over a 20-thousand-year period. Layer upon layer of mud was deposited over these years, entombing huge numbers of fish. At a much later date volcanic activity uplifted this area to expose their fossils. -
Natural History - Insects in Baltic Amber Group
Oligocene Period, circa 45 million years B.P.Sold for (Inc. bp): £46
Comprising seven specimens containing insects together with other inclusions. 2.57 grams total, 9-19 mm
Collected between 1930 and 1960. From the collection of the palaeontologist R Gledhill. -
Natural History - Mosasaur Fossil Jaw Section
Late Cretaceous Period, 70 million years B.P.Sold for (Inc. bp): £26
Comprising a partial jaw and two teeth from Igdamanosaurus aegyptiacus. 110 grams, 72 mm
From the Oulad Abdoun Basin, Morocco, North Africa. Collected between 1930 and 1960. From the collection of the palaeontologist R Gledhill.
Most Mosasaurs had sharp teeth that had evolved to grab slippery prey such as fish. Igdamanosaurus had semi-spherical teeth with rounded points, which were better suited for crushing tough-armoured prey such as turtles, ammonites, nautili, and bivalves.
