Loading, please wait...
LOT 2705
Cut and Polished Agate Coaster Pair
2 7/8 in. (104 grams total, 72 mm each).
Comprising two translucent polished slices with black and orange banding. [2, No Reserve]
ProvenanceFrom Brazil.
Ex Mineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
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.
-
Large Cut and Polished Fossil Ammonite Plate
Jurassic Period, circa 199-145 million years B.P.Sold for (Inc. bp): £156
A circular composite plate composed of overlapping Cleoniceras sp. ammonites. 947 grams, 25.5 cm
From Madagascar. From a Lincolnshire, UK, collection. -
Staurolite Mineral Specimen
Sold for (Inc. bp): £7
Comprising lustrous brown twinned crystals on sparkly muscovite schist. 147 grams, 80 mm
From Keyvy, Murmansk, Russia. Acquired from Don Edwards, Derbyshire, UK. From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent. -
Fossil Green River Fish
Eocene Period, circa 58-36 million years B.P.Sold for (Inc. bp): £39
Comprising three rounded matrices, each with a Knightia alta specimen. 220 grams total, 87-92 mm
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.
