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LOT 2442
Paleoproterozoic Stromatolite
2.5-1.688 BILLION YEARS B.P.
5 1/2 in. (316 grams, 14.1 cm).
Eroded Carnegia wongawolensis in sedimentary matrix. [No Reserve]
ProvenanceFrom near Wiluna, Western Australia.
Ex Australian art market.
From a Leicestershire, UK, collection.
Accompanied by a previous typed information card.
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AUCTIONS:
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Fossil Flexicalymene Trilobite Cluster
Devonian Period, circa 417-354 million years B.P.Sold for (Inc. bp): £169
A mortality plate showing a cluster of Flexicalymene sp. trilobites. 2117 grams, 230 mm
From a Cambridgeshire, UK, collection. -
Green River Fossil Knightia Fish Group
Eocene Period, circa 56-33 million years B.P.Sold for (Inc. bp): £26
Comprising three rounded matrices, two with a single Knightia alta specimen and one with a pair of fish. 188 grams total, 73-98 mm
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 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. -
Fossil Primigatus Fish
Cretaceous Period, circa 145-66 million years B.P.Sold for (Inc. bp): £46
A rare Primigatus sp. fish on a rectangular matrix. 285 grams, 145 mm
From Lebanon. From a Cambridgeshire, UK, collection.
