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LOT 2508
Natural History - Cut Fossil Ammonite Halves
MIDDLE CRETACEOUS PERIOD, 150 MILLION YEARS B.P.
4 3/8 in. (357 grams total, 11.2 cm each).
Polished to reveal the distinctive structure of the Cleoniceras sp. chambers, some iridescence; chip to edge of one half. [2, No Reserve]
ProvenanceFrom Madagascar.
Collected between 1930 and 1960.
From the collection of the palaeontologist R Gledhill.
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AUCTIONS:
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Natural History - Coloured Quartz Nodule
Sold for (Inc. bp): £39
Comprising two halves with enhanced purple crystals. 1.03 kg total, 11.8-12.2 cm
From a Cambridgeshire, UK, collection. -
Natural History - Large Fossil Diplomystus Fish
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £33
Set in a rectangular shale matrix. 395 grams, 15.2 cm
From Wyoming, Green River Formation, U.S.A. From an old Bristol, 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 - Giant Elephant Bird Eggshell Group
Pleistocene Period, 2.6 million-11,700 years B.P.Sold for (Inc. bp): £13
Comprising four sections of Aepyornis eggs. 50 grams total, 35-68 mm
From Madagascar. Acquired 1950s-1960s. From an old Bristol, UK, paleontological collection.
