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LOT 3136
North American Diplomystus Fossil Fish
EOCENE PERIOD, 58-36 MILLION YEARS B.P.
7 1/4 in. (336 grams, 18.3 cm).
Rectangular matrix with a good-sized Diplomystus specimen; some restoration. [No Reserve]
ProvenanceFrom Green River formation, Wyoming, USA.
From a 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 Uinta, 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 period. 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.
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AUCTIONS:
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LOT 3136
North American Diplomystus Fossil Fish
Estimate £40 - 60€46 - 70 (for guidance only)$54 - 81 (for guidance only)
Opening Bid
£5 (EUR 6; USD 7) +BP*
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Fossil Keichousaurus Skeleton in Three-Dimensional Dorsal View
Triassic Period, circa 250 million years B.P.Estimate: £800 - 1,000 (+bp*)
Bids: 1 | Current Bid: £250
Showing a complete skeleton Keichousaurus hui shown from above with clearly defined spinous processes, the front legs tucked partially above the ribs, a curving neck and a long tail. 17.7 kg, 28.9 cm
From the Guizhou formation, China. Previously with Shishang Corporation, Taiwan. From a West London gentleman collector; acquired from a professional fossil company in Taiwan.
Keichousaurus was a late Triassic marine reptile, a member of the Pleurosaur family, which 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. -
Fossil Trilobite in Welsh Slate
Cambrian Period, circa 485-540 million years B.P.Estimate: £30 - 40 (+bp*)
Opening Bid: £5
Large, partial fossil of a trilobite, comprising the head and part of the carapace. 1.54 kg total, 16.5 cm
Acquired on the UK art market. Property of a Nottinghamshire, UK, gentleman. -
Polished Copal with Mosquito Inclusion
Carboniferous Period, circa 3 million years B.P.Estimate: £30 - 40 (+bp*)
Bids: 2 | Current Bid: £15
Large specimen of transparent copal with a mosquito inclusion showing fine iridescence on its back, as well as several other insect inclusions. 15.3 grams, 63 mm
From a Lincolnshire, UK, collection.
