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LOT 0437
Natural History - Large Multi Fossil Fish Plate
EOCENE PERIOD, CIRCA 56-33 MILLION YEARS B.P.
19 7/8 x 15 in. (8.25 kg, 50.5 x 38 cm).
The large sandstone matrix with five Knightia alta specimens.
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 - Purple and Blue Triangular Fluorite Specimen Group [50]
Sold for (Inc. bp): £35
Comprising variously sized translucent specimens in light blue to dark purple colour. 897 grams total, 33-39 mm
From China. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Boxed Historic Baryte Crystal Display Specimen
Sold for (Inc. bp): £52
Comprising white bladed crystals; supplied in a cardboard tray. 193 grams, 10.7 cm
Ex Gregory, Bottley & Lloyd (Gregory -
Natural History - Unpolished Cut Amethyst Crystal Geode Slice Pair
Sold for (Inc. bp): £20
Each with two straight edges, cut to expose the inner structure of a geode with layers of amethyst and other crystals. 969 grams total, 26.7-27 cm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's).