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LOT 2319
Natural History - Fossilised Wood Slice
TRIASSIC PERIOD, CIRCA 230 MILLION YEARS B.P.
6 3/4 in. (762 grams, 17.2 cm).
Polished to both sides. [No Reserve]
ProvenanceFrom Madagascar.
Acquired 1950s-1960s.
From an old Bristol, UK, palaeontological collection.
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AUCTIONS:
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Natural History - Fossil Shrimps
Late Cretaceous Period, Cenomanian Stage, circa 100.5-93.9 million years B.P.Sold for (Inc. bp): £33
On a sedimentary matrix comprising three Carpopenaeus callirostris specimens. 123 grams, 69 x 66 mm
Ex Lincolnshire, UK, collection. -
Natural History - Knightia Fossil Fish
Eocene Period, circa 58 million years B.P.Sold for (Inc. bp): £78
The rectangular matrix containing a Knightia alta fish. 233 grams, 14.6 cm
From Wyoming (Green River Formation), USA. Acquired during 1980s. From the Pradi Collection, Boston, U.S.A.
Seasonally some 58 million years ago, in the Green River region of Wyoming, torrential rains fell in the mountains. They flowed down the mountain sides, forming wide shallow lakes in the valley below. During the dry season, these lakes would dry up due to evaporation (as happens in certain parts of Africa today). Millions of fish died in this short period of time. This climatic cycle happened over a 20-thousand-year period. Layer upon layer of mud entombed all these fish. At a much later date, volcanic activity uplifted this area to expose the fossils. -
Natural History - Large Fossil Ammonite
Late Cretaceous Period, Cenomanian-Turonian Stages, circa 100- 90 million years B.P.Sold for (Inc. bp): £98
A freestanding example of a large Mammites nodosoides fossil ammonite. 3 kg, 20 cm
From Morocco, North Africa.
