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LOT 2061
Natural History - Knightia Fossil Fish Group
EOCENE PERIOD, CIRCA 56-33 MILLION YEARS B.P.
3 in. (159 grams total, 75 mm each).
Comprising three rounded sandstone matrices, each with a Knightia alta specimen. [3, 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 - Fossil Icthyosaur 'Marine Dinosaur' Vertebra
Jurassic Period, circa 200-145 years B.P.Sold for (Inc. bp): £39
An Ichthyosaurus communis vertebra; supplied with a carboard specimen tray. 136 grams, 66 mm
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Natural History - Giant Elephant Bird Eggshell Group
Pleistocene Period, 2.6 million-11,700 years B.P.Sold for (Inc. bp): £52
Comprising four eggshell sections from Aepyornis. 42.7 grams total, 36-65 mm
From Madagascar. Acquired 1950s-1960s. From an old Bristol, UK, palaeontological collection. -
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Comprising large irregular chunks of light blue calcite. 3.07 kg total, 65-92 mm
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