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LOT 2441
62.5 Carats of Yellow Apatite Crystals
1/8 - 1/2 in. (12.5 grams total, 5-13 mm).
A group of yellow apatite specimens in various sizes and shades. [43, No Reserve]
ProvenanceFrom Durango, Mexico.
UK gallery, early 2000s.
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AUCTIONS:
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Cut and Polished Fossil Ammonite
Jurassic Period, circa 199-145 million years B.P.Sold for (Inc. bp): £52
Cut Cleoniceras sp. ammonite, polished to reveal the distinctive structure of the chambers. 98 grams total, 72 - 74 mm
From Madagascar. From a Lincolnshire, UK, collection. -
Whitby Dac Fossil Ammonite Nodule
Jurassic Period, Toarcian Stage, circa 180 million years B.P.Sold for (Inc. bp): £104
An opened nodule containing Dactylioceras commune sp. 132 grams, 62 mm
From Yorkshire coast. From a Lincolnshire, UK, collection. -
Green River Knightia Fossil Fish Group
Eocene Period, circa 56-33 million years B.P.Sold for (Inc. bp): £46
Comprising three Knightia alta fish on individual matrices. 140 grams, 72-90 mm
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.
