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LOT 2510
Polished Fossil Ammonite Plate
JURASSIC PERIOD, CIRCA 199-145 MILLION YEARS B.P.
9 1/2 in. (781 grams, 240 mm).
A circular composite plate of overlapping Cleoniceras sp. ammonites. [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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Mosasaur 'Marine Dinosaur' Tooth with Root
Cretaceous Period, 145-65 million years B.P.Sold for (Inc. bp): £91
A large curved Mosasaur prognathodon tooth with root. 154 grams, 12 cm
Acquired on the European art market since the early 2000s. From the private Northern Ireland collection of R.M. -
Woolly Mammoth Bone Bead Necklace String
Devensian Period, 110,000-12,000 years B.P.Sold for (Inc. bp): £59
Restrung using recently polished Mammuthus primigenius bone beads. 175 grams, 60 cm
Ex London, UK, collection, 2000s. -
Green River Fossil Priscacara Fish
Eocene Period, 58-36 million years B.P.Sold for (Inc. bp): £468
Priscacara liops fish in rectangular matrix, showing good detail especially to the fins. 433 grams, 220 mm
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.
