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LOT 2300
Natural History - Fossil Amphibian Coprolite
CHINLE FORMATION, UPPER TRIASSIC PERIOD, CIRCA 200 MILLION YEARS B.P.
2 1/8 in. (67.8 grams, 55 mm).
Rounded mass from Seymouria baylorensis. [No Reserve]
ProvenanceFrom the Chinle Formation, New Mexico.
Acquired 1950s-1960s.
From an old Bristol, UK, palaeontological collection.
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AUCTIONS:
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Natural History - Fossil Agadir Ammonite
Cretaceous Period, circa 90 million years B.P.Sold for (Inc. bp): £98
The medium sized freestanding white ammonite with a cut base. 1.3 kg, 12.1 cm
From Morocco, North Africa. Ex Cambridgeshire, UK, collection. -
Natural History - Fossilised Poplar Leaf
Circa 50 million years B.P.Sold for (Inc. bp): £2,340
On a rectangular limestone matrix, the poplar leaf with good detailing and showing clear midrib and veins; mounted on a custom-made display stand. 1.5 kg total, 35 cm high including stand
From the Green River Formation, Parachute Creek, Bonanza, Utah, USA. -
Natural History - Knightia Fossil Fish Mortality Plate
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £65
The round matrix displaying three Knightia alta fossil fish with faint remains of another. 168 grams, 13.6 cm
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.
