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LOT 2292
Natural History - Large British Eleganticeras Fossil Ammonite Multi Display 'Egg'
JURASSIC PERIOD, CIRCA 185-180 MILLION YEARS B.P.
7 1/2 in. (3.8 kg, 19 cm wide).
Displaying Eleganticeras Elegantulum ammonite specimens, with naturally occurring crude oil within the specimen; repaired.
ProvenanceFrom North Yorkshire, UK.
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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LOT 2292
Natural History - Large British Eleganticeras Fossil Ammonite Multi Display 'Egg'
Estimate £400 - 600€460 - 700 (for guidance only)$540 - 810 (for guidance only)
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Natural History - British Asteroceras Fossil Ammonite
Jurassic Period, circa 202-201 million years B.P.Sold for (Inc. bp): £364
Displayed in a free-standing matrix; from the Frodingham Ironstone Member. 2 kg, 18 cm
From the exhausted Coningsby Quarry, Scunthorpe, Lincolnshire, UK. -
Natural History - Fossil Keichousaurus Marine Reptile Skeleton
Triassic Period, circa 250 million years B.P.Sold for (Inc. bp): £1,430
Complete Keichousaurus hui skeleton on a rectangular matrix. 3.95 kg, 34 cm
From Xingyi, Guizhou, China. Acquired 1950s-1960s. From an old Bristol, UK, palaeontological collection.
Keichousaurus was a late Triassic marine reptile, and a member of the Pleurosaur family, and went extinct 250 million years ago during the Triassic-Jurassic extinction event. They were specialised fish eaters, and were highly unusual amongst marine reptiles in that they gave birth to live young rather than laying eggs. -
Natural History - Fossil Guppy Fish Mortality Plate
Jurassic Period, circa 150 million years B.P.Sold for (Inc. bp): £78
The irregular matrix with a number of Poecilia reticulate sp. fish. 620 grams, 20.5 cm
Ex Lincolnshire, UK, collection.
In southwest Wyoming (and parts of Colorado and Utah) in the Green River Formation are found some of the world's most outstanding specimens of fossil fish. The Green River system was composed of three lakes: Lake Ulinta, Lake Gosiute and Fossil Lake. These Eocene lakes lay in a series of intermountain basins formed by geological events that uplifted the Rocky Mountains during the early Tertiary time. The climate was much different from the desert-like climate of this area today. Both the fauna (crocodiles, alligators, boa constrictors and some subtropical fish families) and the flora (such as large palm trees) indicate a climate much like that found along the Gulf Coast today. Large amounts of ash found in the sediments indicate that volcanoes were particularly active at this time.
