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LOT 1759
Natural History - Very Large Septarian Cut and Polished 'Alien Egg' Geode Half
8 in. (3.8 kg, 20.5 cm).
A cut and polished septarian egg half, the centre filled with calcite crystals surrounded by a thin layer of aragonite, the outer layer of grey limestone; a beautiful display piece. [No Reserve]
ProvenanceMineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's).
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AUCTIONS:
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LOT 1759
Natural History - Very Large Septarian Cut and Polished 'Alien Egg' Geode Half
Sold for (Inc. bp): £52
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Natural History - Mioplosus Fossil Fish in Matrix
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £72
A rectangular sedimentary matrix displaying a Mioplosus sp. fossil fish. 937 grams, 17.8 x 13 cm
Ex 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. -
Natural History - Mosasaur Fossil Jaw Section
Cretaceous Period, 145-65 million years B.P.Sold for (Inc. bp): £182
A fossilised lower jaw section displaying two teeth from Prognathodon sp., a mosasaur specialised in eating tough shelled prey. 68.6 grams, 70 mm
From the phosphate mine region, Khouribga, Morocco, North Africa. Acquired 1950s-1960s. From an old Bristol, UK, paleontological collection. -
Natural History - Cut and Polished Agate Slice
Sold for (Inc. bp): £39
A cut and polished banded agate slice, displayed on a crescentic wooden base. 278 grams, 18 cm high
From Uruguay. Private collection, Munster, Germany.
