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LOT 2413
Natural History - Fossil Ammonites in Matrix
JURASSIC PERIOD, 199.3-190.8 MILLION YEARS B.P.
3 3/8 in. (245 grams, 86 mm).
Set with several specimens of Galaticeras jacksoni, Promicroceras planicosta and juvenile Epophioceras. [No Reserve]
ProvenanceFrom Black Ven, Lyme Regis, Dorset, UK, 1988.
Ex UK collection.
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AUCTIONS:
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Natural History - Cut and Polished Quartz Crystal Geode Display
Sold for (Inc. bp): £23
The geode section with clusters of milky-white quartz crystals. 894 grams, 13 cm
From a Leicestershire, UK, collection. -
Natural History - Megalodon Giant Shark Fossil Tooth
Miocene-Pliocene Period, circa 23-3.5 million years B.P.Sold for (Inc. bp): £494
Displaying serrations and polished enamel, from the Carcharocles megalodon shark. 238 grams, 10.5 cm
Ex Lincolnshire, UK, collection.
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 C. megalodon in life looked like a stockier version of the great white shark, Carcharodon carcharias. -
Natural History - Fossil Guppy Fish Mortality Plate
Jurassic Period, circa 150 million years B.P.Sold for (Inc. bp): £78
The irregular matrix with a number of Poecilia reticulate sp. fish. 620 grams, 20.5 cm
Ex 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.
