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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 - Quartz Crystal Nodule
Sold for (Inc. bp): £7
The nodule split to reveal the rich quartz crystal deposits within. 60 grams total, 40-41 mm
From a Cambridgeshire, UK, collection. -
Natural History - Mini Agate Crystal Geode Half Group [100]
Sold for (Inc. bp): £20
Comprising various colours, most displaying crystals to the exposed inner faces. 631 grams total, 18-37 mm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Mastodon Tusk Carving
Pliocene Period, circa 5.2-2.5 million years B.P.Sold for (Inc. bp): £27
With a later face carving with exaggerated detailing. 93 grams, 10.6 mm
From Island of Java. Acquired 1950s-1960s. From an old Bristol, UK, palaeontological collection.