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LOT 1902
Natural History - Knightia Fossil Multi Fish Plate
EOCENE PERIOD, CIRCA 56-33 MILLION YEARS B.P.
4 7/8 in. (141 grams, 12.4 cm).
The rounded sandstone matrix with three Knightia alta 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 - Large Boxed Pyrite Crystal 'Paper Weight'
Sold for (Inc. bp): £39
Comprising a large mass of small crystals; supplied in a labelled specimen box. 627 grams, 88 mm
From Huanuco, Peru. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Fossilised Wood Slice
Triassic Period, circa 230 million years B.P.Sold for (Inc. bp): £26
The large slice with two polished faces showing some good detail. 1.11 kg, 19.2 cm
Acquired 1950s-1960s. From an old Bristol, UK, palaeontological collection. -
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.
