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LOT 2519
Natural History - Sporadoceras Goniatite Display
UPPER DEVONIAN PERIOD, 385-359 MILLION YEARS B.P.
4 in. (299 grams, 10.3 cm).
Free-standing and polished through the shell to reveal the calcite preserved inside, showing the dividing gas chambers. [No Reserve]
ProvenanceFrom the Atlas Mountains, Morocco, North Africa.
Acquired 1950s-1960s.
From an old Bristol, UK, palaeontological collection.
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AUCTIONS:
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Natural History - Knightia Fossil Fish
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £33
In a rectangular matrix. 345 grams, 18 x 12.5 cm
Fine condition.
From Wyoming, Green River Formation, U.S.A. Acquired during the 1980s. From the Pradi Collection, Boston, U.S.A.
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. -
Natural History - Fossil Crab on Matrix
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £286
Showing both sides of the carapace and both claws; repaired. 1.8 kg total, 17.5 cm
From a Lincolnshire, UK, collection. -
Natural History - Deltadromeus Dinosaur Fossil Leg Bone Section
Cretaceous Period, 90 million years B.P.Sold for (Inc. bp): £26
From the front leg of Deltadromeus agilis. 405 grams, 18 cm
From the Kem-Kem Basin, Morocco, North Africa. From an old German paleontological collection.
Deltadromeus had extraordinarily delicate and long limbs making it one of the fastest dinosaurs to have existed. This meat-eating dinosaur was an early off-shoot of the theropod line on northern continents that gave rise to Tyrannosaurus and the raptor Deinonychus.
