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LOT 2473
Natural History - Flexicalymene Fossil Trilobite Group
DEVONIAN PERIOD, CIRCA 417-354 MILLION YEARS B.P.
2 3/4 - 3 3/8 in. (351 grams total, 71-86 mm).
Three Flexicalymene sp. trilobites from nodules. [3, No Reserve]
ProvenanceFrom Morocco, North Africa.
From a Cambridgeshire, UK, collection.
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AUCTIONS:
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Natural History - Green River Fossil Fish Group
Eocene Period, circa 56-33 million years B.PSold for (Inc. bp): £59
Two Green River fish specimens Diplomystus sp. in a matrix. 243 grams, 15.8 cm
From Wyoming (Green River Formation), USA. 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. -
Natural History - Fossil Starfish Group
Ordovician Period, circa 485-444 million years B.P.Sold for (Inc. bp): £26
Comprising four Petraster sp. specimens on matrices. 716 grams total, 7-12 cm
From a Cambridgeshire, UK, collection. -
Natural History - Satin Spar Wand Group [32]
Sold for (Inc. bp): £26
Comprising cut sections with silky surfaces. 519 grams total, 48-71 mm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's).