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LOT 2535
Natural History - Fossil Leonaspis Trilobite
DEVONIAN PERIOD, CIRCA 380 MILLION YEARS B.P.
2 3/4 in. (180 grams, 70 mm).
Showing the odontopleurid trilobite specimen on an irregular matrix; repaired. [No Reserve]
ProvenanceFrom Hamar L'Aghdad limestones, Djebel Issomour area, Anti-Atlas Mountains, Morocco.
From a Cambridgeshire, UK, collection.
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AUCTIONS:
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Natural History - Large Whitby Dactylioceras Ammonite Fossil
Lower Jurassic Period, Toarcian Stage, circa 180 million years B.P.Sold for (Inc. bp): £16
Comprising Dactylioceras tenuicostatum positive in a nodule. 772 grams, 11.8 cm
From a Lincolnshire, UK, collection. -
Natural History - Sikhote-Alin Meteorite
Fell February 12, 1947 A.D.Sold for (Inc. bp): £52
Classified as an iron IIAB meteorite. 32.6 grams, 37 mm
From a Lincolnshire, UK, collection. -
Natural History - Priscacara Fossil Fish
Eocene Period, 58-36 million years B.P.Sold for (Inc. bp): £117
In a rectangular matrix. 385 grams, 16.5 x 13.5 cm
Fine condition. Scarce.
Lincolnshire, UK, collection.
Seasonally, some 56 million years ago, in the Green River Region of Wyoming, torrential rains fell on the mountains. The rain flowed down the mountain sides, forming wide shallow lakes in the valley below. During the dry season, these lakes evaporated (similar to 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 was deposited over these years, entombing huge numbers of fish. At a much later date volcanic activity uplifted this area to expose their fossils.
