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LOT 2555
Fossil Perisphinctid Ammonite
JURASSIC PERIOD, CIRCA 174-145 MILLION YEARS B.P.
3 3/8 in. (154 grams, 87 mm).
Perisphinctid indogermanus fossil ammonite showing clear ribbing on both sides. [No Reserve]
ProvenanceFrom a Lincolnshire, UK, collection.
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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Mixed Fossil, Crystal and Mineral Collection
Sold for (Inc. bp): £20
Comprising: hematite, kyanite, agate, fossilised wood, a geode section, calcite, fossilised vertebra, and others. 3.1 kg total including tray, 4.4-15 cm
From a Cambridgeshire, UK, collection. -
Polished Fossil Goniatite Lidded Trinket Box
Devonian Period, circa 400 million years B.P.Sold for (Inc. bp): £39
A square box carved from fossiliferous stone, the lid set with a larger Goniatite sp. specimen. 548 grams, 91 x 91 mm
From a Cambridgeshire, UK, collection. -
Knightia Fossil Fish Plate Group
Eocene Period, circa 58-36 million years B.P.Sold for (Inc. bp): £52
Comprising three circular plates, each with a Knightia alta fish, and a fourth plate with small remains of one. 165 grams total, 71-80 mm
From Wyoming, 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 Uinta, 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.
