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LOT 2123
Natural History - Knightia Fossil Fish Plate
EOCENE PERIOD, CIRCA 56-33 MILLION YEARS B.P.
6 1/4 x 5 1/8 in. (507 grams, 16 x 13 cm).
The square sandstone matrix with two Knightia alta fossil fish specimens. [No Reserve]
ProvenanceFrom a Lincolnshire, UK, collection.
FootnotesIn 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.
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AUCTIONS:
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Natural History - Quartz Crystal Point Group [20]
Sold for (Inc. bp): £7
Comprising mainly larger singular points, one twin crystal formation. 1.22 kg total, 60-84 mm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - African 'T-rex' Fossil Tooth and Root
Cretaceous Period, circa 145-93 million years B.P.Sold for (Inc. bp): £104
From Carcharodontosaurus saharicus (African T-rex) with root. 29.2 grams, 80 mm
From the Tegana formation of the Sahara Desert, Morocco. Acquired during 1980s. From an old Lincolnshire, UK, collection.
The Carcharodontosaurus saharicus was one of the largest predators (larger than its distant North American T-Rex cousin) of all time and is also related to Allosaurus and the South American Giganotosaurus. -
Natural History - Amber Group with Insect Inclusions
Oligocene Period, circa 45 million years B.P.Sold for (Inc. bp): £72
Comprising ten specimens of polished amber with insect inclusions. 27.2 grams total, 18-30 mm
From a North American collection. Property of an East Sussex, UK, gentleman.