Loading, please wait...
LOT 2056
Natural History - Knightia Fossil Fish
EOCENE PERIOD, CIRCA 56-33 MILLION YEARS B.P.
4 5/8 in. (200 grams, 11.7 cm).
Knightia alta specimen on a rectangular matrix. [No Reserve]
ProvenanceFrom Wyoming (Green River Formation), USA.
Acquired during 1980s.
From the Pradi Collection, Boston, U.S.A.
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.
CONDITIONTimeLine 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 - Historic Asbestos Mineral Specimen
Sold for (Inc. bp): £13
Cut section showing thin fibrous crystals; supplied in a display box. 82 grams, 62 mm
Collected in person from various parts of the world mainly between 1957-1966. From the private mineral collection of Stephen Atkinson, Harpenden, UK. Accompanied by a copy of a letter from the vendor giving details of him collecting these minerals throughout his life. -
Natural History - Historic Roman 'Spartan Basalt' Cut & Polished Green Porphyry Section
Sold for (Inc. bp): £442
A large lacquered cut section mined in Greece, probably recycled material mined in ancient Roman times. 574 grams, 23 cm
From Greece. Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's).
Also known as Lapis Lacedaemonius and Porfido Verde Antico, a type of green porphyry quarried in Greece. Spartan basalt is a form of andesite or volcanic rock known today only from a single source in the village of Krokees on the Peloponnese in Greece. In addition, ancient sources mention a quarry of Lapis Lacedaemonius in Taygetus. -
Natural History - Specularite Haematite Specimen Group [44]
Sold for (Inc. bp): £7
Comprising a quantity of variously-sized matrices with clusters of specularite. 288 grams total, 13-44 mm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's).