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LOT 2310
Natural History - Fossil Perisphinctes Ammonite
JURASSIC PERIOD, CIRCA 199-145 MILLION YEARS B.P.
3 1/4 in. (172 grams, 83 mm).
Perisphinctids indogermanus with most of the original shell material remaining. [No Reserve]
ProvenanceFrom Madagascar.
Ex Lincolnshire, UK, collection.
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AUCTIONS:
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Natural History - Knightia Fossil Fish Plate
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £59
The rectangular matrix containing a large Knightia alta sp. specimen. 185 grams, 14.5 cm
From Green River Formation, Wyoming, USA. Ex 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 - Large Fossil Echinoid Display Pair
Cretaceous Period, circa 100 million years B.P.Sold for (Inc. bp): £52
Featuring two echinoid specimens in an irregular matrix. 2.8 kg, 17.5 cm
From Morocco, North Africa. -
Natural History - Large British Kosmoceras Fossil Ammonites Display Panel
Jurassic Period, circa 165-160 million years B.P.Sold for (Inc. bp): £260
Comprising a large seabed matrix panel showing many fossil superimposed specimens of Kosmoceras sp. ammonites in situ; with custom-made stand for display. 8.45 kg total, 38 cm including stand
From Wiltshire, UK.
