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LOT 2327
Natural History - Whitby Dac Fossil Ammonite Cluster
LOWER JURASSIC PERIOD, TOARCIAN STAGE, CIRCA 180 MILLION YEARS B.P.
6 1/4 in. (680 grams, 16 cm).
Comprising a large number of Dactylioceras tenuicostatum in various sizes. [No Reserve]
ProvenanceEx Lincolnshire, UK, collection.
CONDITIONTimeLine Auctions follows a vetting process to ensure the authenticity and legality of all items, reinforcing our commitment to integrity and responsible trading. Each antiquity, antique, and coin lot undergoes thorough examination by a vetting committee of at least ten external specialists, professional trade association members, scientists, and archaeologists: Our Vetting Process
AUCTIONS:
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Natural History - Polished Heart-Shaped Fossil Coral Palm Stone
Devonian Period, 417-354 million years B.P.Sold for (Inc. bp): £221
Bifacial, polished to show the structure of the fossilised coral. 107 grams, 73 mm
From North Africa. Ex Cambridgeshire, UK, collection. -
Natural History - British Asteroceras Fossil Ammonite Multi Display
Jurassic Period, circa 202-201 million years B.P.Sold for (Inc. bp): £416
Presenting a cluster of natural, unpolished Asteroceras sp. fossil ammonites in a matrix; from the Frodingham Ironstone Member. 4.6 kg, 29 cm
From the exhausted Coningsby Quarry, Scunthorpe, Lincolnshire, UK. -
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.
