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LOT 2345
Natural History - Knightia Fossil Fish Plate
EOCENE PERIOD, 56-33 MILLION YEARS B.P.
5 3/4 in. (185 grams, 14.5 cm).
The rectangular matrix containing a large Knightia alta sp. specimen. [No Reserve]
ProvenanceFrom Green River Formation, Wyoming, USA.
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.
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 - Fossil Dactylioceras Ammonites
Lower Jurassic Period, circa 172 million years B.P.Sold for (Inc. bp): £52
Comprising a number of Dactylioceras sp. ammonites on a matrix. 342 grams, 12.3 cm
From Bayern, Germany. Ex Lincolnshire, UK, collection. -
Natural History - Large British Amauroceras Fossil Ammonite Display
Jurassic Period, circa 180-185 million years B.P.Sold for (Inc. bp): £130
Showing an Amauroceras lenticulare fossil ammonite specimen in a free-standing matrix. 2.69 kg, 21.5 cm wide
From Hawsker, North Yorkshire, UK. -
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.
