Loading, please wait...
LOT 1883
Natural History - Pyrite Crystal Group
1/2 - 1 in. (568 grams total, 12-26 mm).
A group of 100 pyrites or 'fool's gold' crystal specimens. [100, No Reserve]
ProvenanceFrom Brazil.
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.
-
Natural History - Cut and Polished Fossil Ammonite
Jurassic Period, 199-145 million years B.P.Sold for (Inc. bp): £26
A pair of cut and polished fossil ammonite halves, each displaying the gas chambers; possibly Cleoniceras sp. 405 grams total, 11.9 cm wide each
From Madagascar. Collected between 1930 and 1960. From the collection of the palaeontologist R Gledhill. -
Natural History - Fossil Brittle Star on Matrix
Ordovician Period, 485-444 million years B.P.Sold for (Inc. bp): £33
A polygonal matrix displaying a fossilised Ophiura sp. brittle star. 449 grams, 14 cm
From Morocco, North Africa. Ex Lincolnshire, UK, collection. -
Natural History - Knightia Fossil Fish in Matrix
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £65
A rectangular sedimentary matrix displaying at least four fossil Knightia sp. fish. 624 grams, 16 cm
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.
