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LOT 2430
Polished Fossil Cleoniceras Ammonite
CRETACEOUS PERIOD, CIRCA 145-66 MILLION YEARS B.P.
2 1/2 in. (12.7 grams, 66 mm).
Cleoniceras besairiei showing the internal structure of the shell. [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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Fossil Megalodon Giant Shark's Tooth
Pliocene Period, 5.2-2.5 million years B.P.Sold for (Inc. bp): £111
From Carcharocles megalodon showing serrations to both edges; repaired. 73 grams, 81 mm
From a Perthshire, collection, Scotland, UK.
Carcharodon megalodon is regarded as one of the largest and most powerful marine predators in vertebrate history and likely had a profound impact on structuring of the marine communities. Fossil remains indicate that this giant shark reached a length of more than 16 metres (52 ft) and also affirm that it had a cosmopolitan distribution. Scientists suggest that in life it looked like a stockier version of the great white shark, Carcharodon carcharias. -
Whitby Dac Fossil Ammonite Nodule
Jurassic Period, Toarcian Stage, circa 180 million years B.P.Sold for (Inc. bp): £104
An opened nodule containing Dactylioceras commune sp. 132 grams, 62 mm
From Yorkshire coast. From a Lincolnshire, UK, collection. -
Wyoming Fossil Knightia Fish
Eocene Period, circa 56-33 million years B.P.Sold for (Inc. bp): £26
Knightia alta specimen on a rectangular matrix. 439 grams, 15.5 cm
Ex AA Shop, Windsor, UK; and Donaldson 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.
