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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 - Large NWA 15250 L5 Chondrite Meteorite Slice in Case
Found 2022 A.D.Sold for (Inc. bp): £208
The cut and polished slice held in a custom-made collector's display box. 51 grams total, 84 mm wide including case
From the Sahara Desert, North Africa. Property of a Sussex, UK, teacher. Accompanied by a specimen identification card from Adrian Contreras Gomez.
Chondrites are the oldest materials in the solar system with an estimated age of formation of 4.55 billion years. -
Natural History - Fossil Malladoides Trilobite
Upper Devonian Period, circa 385-359 million years B.P.Sold for (Inc. bp): £46
The Morocconites malladoides on a matrix. 24 grams, 77 mm
From the Atlas Mountains, Hamar Laghdad Formation, Pragian, (Alnif), Morocco. From an old Oxfordshire, UK, fossil and mineral collection. -
Natural History - Knightia Fossil Fish Plate
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £104
The rectangular matrix containing four Knightia alta sp. fish. 955 grams, 24.2 cm
From the 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.
