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LOT 2461
Natural History - Fossil Diplomystus Fish
EOCENE PERIOD, 56-33 MILLION YEARS B.P.
5 1/8 x 3 3/8 in. (112 grams, 13.2 x 8.5 cm).
In a matrix. [No Reserve]
ProvenanceFrom the Green River Formation, Lincoln County, Wyoming, U.S.A.
From an old Lincoln 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.
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AUCTIONS:
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Natural History - Fossil Fly Group
Eocene Period, 50 million years B.P.Sold for (Inc. bp): £13
Comprising three specimens on a matrix. 150 grams total, 58-60 mm
From the Green River Formation, south western Wyoming, U.S.A. Collected between 1930 and 1960. From the collection of the palaeontologist R Gledhill. -
Natural History - Nantan Iron Meteorite
Fell 1516 A.D., found 1958 A.D.Sold for (Inc. bp): £169
With a composition of 92.35% iron and 6.96% nickel, classified as a nickel iron meteorite (111CD). 34.7 grams, 46 mm
From Nantan Nandan County, Guangxi Region, China. From an old Lincoln, UK, collection.
The Nantan meteorite fell in 1516, as recorded in ancient Chinese texts; the fall exploded during descent which resulted in a shower of many individual iron meteorites over an area some 28km x 8km in Nantan County, Guangxi, China. Classified as an iron meteorite; 111CD Course Octohedrite, the composition is approximately 92% iron, 6% nickel and contains more than ten other minerals including kamacite, taenite, dominate, plessite, schreibersite, triolite, graphite and others. -
Natural History - Fossil Dactylioceras Athleticum Ammonite Cluster
Jurassic Period, 199-175 million years B.P.Sold for (Inc. bp): £117
Comprising several different sized specimens on a sandstone matrix. 412 grams, 15.5 cm
From a Lincolnshire, UK, collection.