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LOT 2690
Polished Fossil Orthoceras Plate
DEVONIAN PERIOD, CIRCA 400 MILLION YEARS B.P.
9 1/2 in. (1.68 kg, 24.1 cm).
Comprising six bullet-shaped Orthoceras sp. specimens on a textured matrix. [No Reserve]
ProvenanceFrom Atlas Mountains, Morocco, North Africa.
From a Cambridgeshire, UK, collection.
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AUCTIONS:
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Ophiuroidea Fossil Brittle Star
Ordovician Period, circa 485.4-443.8 million years B.P.Sold for (Inc. bp): £143
A freestanding matrix containing a large Ophiuroidea sp. specimen. 262 grams, 10.3 cm
From a Cambridgeshire, UK, collection. -
Knightia Fossil Fish
Eocene Period, circa 58-36 million years B.P.Sold for (Inc. bp): £39
A rounded matrix with two Knightia alta fish with faint remains of another one. 62 grams, 91 mm
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. -
Fragment from an Iridescent Ammonite Fossil
Cretaceous Period, circa 75-72 million years B.P.Sold for (Inc. bp): £65
With carinated upper edge, gently curved in profile; supplied with a custom-made display stand. 128 grams, 83 mm (502 grams total, 12.4 cm including stand)
Acquired between 1965-2020. Private collection, London.
