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LOT 2302
Natural History - British Fossil Ammonite
JURASSIC PERIOD, CIRCA 200 MILLION YEARS B.P.
3 5/8 in. (150 grams, 91 mm).
Promicroceras planicosta with contrast in colour to the host rock, from the Lower Lias, Obtusum Zone. [No Reserve]
ProvenanceFrom Lyme Regis, UK.
From a Lincolnshire, UK, collection.
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AUCTIONS:
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Natural History - 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. 152 grams, 56 cm
From an old English collection formed in the 1980s. Property of an Essex gentleman; acquired on the UK art market. -
Natural History - Green River Fossil Fish Group
Eocene Period, circa 56-33 million years B.PSold for (Inc. bp): £59
Two Green River fish specimens Diplomystus sp. in a matrix. 243 grams, 15.8 cm
From Wyoming (Green River Formation), 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 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. -
Natural History - Fossil Mosasaur Tooth Pair
Cretaceous Period, circa 145-65 million years B.P.Sold for (Inc. bp): £46
Comprising a pair of Prognathodon sp. teeth with roots on an matrix. 863 grams total, 12-13 cm
From in the phosphate mine region, Khouribga, Morocco, North Africa. From a Cambridgeshire, UK, collection.
The Mosasaur is an extinct, large marine reptile dinosaur with a snake-like body, long snout and paddle-like limbs. Found worldwide, they competed with other well-known sea predators of the Late Cretaceous, such as plesiosaurs and ichthyosaurs, for food, existing primarily on a diet of ammonoids, cuttlefish and fish.
