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LOT 2869
Fossil Knightia Multi Fish Plate
EOCENE PERIOD, CIRCA 58-36 MILLION YEARS B.P.
5 1/2 in. (172 grams, 14 cm).
Knightia alta fish on a rounded limestone matrix. [No Reserve]
ProvenanceFrom a Cambridgeshire, UK, collection.
FootnotesIn 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:
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Historic Spartan Basalt Cut and Polished Dark Green Porphyry Slab
Sold for (Inc. bp): £1,170
Cut and polished section, mined in Greece, cut and polished on one side, probably recycled material mined in ancient Roman times; mounted on a custom-made metal display stand. 9.82 kg total, 44 cm including stand
Acquired on the UK art market since the 1990s. From the private collection of a Somerset gentleman.
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. -
Granite Core Sample Mineral Display Specimen Group
Sold for (Inc. bp): £26
Comprising five different cylindrical core samples. 3.35 kg total. 11.5-20.5 cm
Ex property of a North West London, UK, lady. -
Citrine Gem Tree on Amethyst Crystal Geode Section
Sold for (Inc. bp): £7
Irregular geode matrix with light purple amethyst crystals; the metal branches tipped with polished light-coloured citrine pebbles. 510 grams, 20 cm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.