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LOT 2528
Natural History - Fossil Seed Fern Group
MIDDLE PENNSYLVANIAN PERIOD, 300 MILLION YEARS B.P.
2 5/8 - 3 1/4 in. (260 grams total, 71-82 mm).
Comprising three Pecopteris sp. specimens. [3, No Reserve]
ProvenanceFrom the Mazon Creek Fossil Beds, Braidwood, Illinois, U.S.A.
Collected between 1930 and 1960.
From the collection of the palaeontologist R Gledhill.
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AUCTIONS:
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Natural History - Knightia Fossil Fish in Matrix
Eocene Period, 58-33 million years B.P.Sold for (Inc. bp): £33
Displaying a fossil Knightia sp. fish. 235 grams, 12.2 cm
Acquired during the 1980s. From the Pradi Collection, Boston, U.S.A.
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 - Stony Iron Meteorite
Sold for (Inc. bp): £143
With typically rough surfaces. 118 grams, 57 mm
From the Sahara Desert, Morocco, North Africa. From an old Oxfordshire, UK, fossil and mineral collection. -
Natural History - Large Whitby Dactylioceras Ammonite Fossil
Lower Jurassic Period, Toarcian Stage, circa 180 million years B.P.Sold for (Inc. bp): £16
Comprising Dactylioceras tenuicostatum positive in a nodule. 772 grams, 11.8 cm
From a Lincolnshire, UK, collection.
