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LOT 1755
Natural History - Fossil Brittle Star Group
MIDDLE ORDOVICIAN PERIOD, CIRCA 450 MILLION YEARS B.P.
3 1/8 - 4 1/8 in. (332 grams total, 8.1-10.6 cm).
Ophiuroidea sp. specimens on irregular matrices. [3, No Reserve]
ProvenanceFrom El Kaid Errami, Tafilalt, Morocco.
From an old German collection.
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AUCTIONS:
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Natural History - Polished Fossil Coral Head Heart
Devonian Period, circa 417-354 million years B.P.Sold for (Inc. bp): £9
Cut to a heart-shape and revealing the internal structures. 178 grams, 76 mm wide
From a Cambridgeshire, UK, collection. -
Natural History - Historic Stibnite Crystal Formation
Sold for (Inc. bp): £39
With radiating and elongated lead-grey crystals. 54 grams, 50 mm
Collected in person from various parts of the world mainly between 1957-1966. From the private mineral collection of Stephen Atkinson, Harpenden, UK. Accompanied by a copy of a letter from the vendor giving details of him collecting these minerals throughout his life. -
Natural History - Fossil Knightia Fish and Fly in Matrix
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £26
On a square sandstone matrix. 708 grams, 18 x 13.5 cm
Ex John Cummings, circa 2000. Property of an Essex gentleman.
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.
