Loading, please wait...
LOT 2486
Natural History - Flexicalymene Fossil Trilobite Nodule
ORDOVICIAN PERIOD, CIRCA 370 MILLION YEARS B.P.
3 in. (167 grams, 75 mm).
The nodule opened to reveal the positive and negative impression of the Flexicalymene trilobite. [No Reserve]
ProvenanceEx Cambridgeshire, 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:
TimeLine is a leading auction house specialising in antiquities, ancient art, collectables, natural history, coins, medals, and books. Our auctions offer museums, collectors, historians, and enthusiasts the opportunity to acquire unique and historically significant pieces.
-
Natural History - Polished Copal with Insects
Over 3 million years B.P.Sold for (Inc. bp): £65
Containing a number of insects and other inclusions. 13 grams, 12.5 cm
From Madagascar. Acquired 1950s-1960s. From an old Bristol, UK, palaeontological collection. -
Natural History - Whitby Dac Fossil Ammonite Nodule
Lower Jurassic Period, Toarcian Stage, circa 180 million years B.P.Sold for (Inc. bp): £20
The nodule halves comprising the positive and negative of Hildoceras sp. ammonite. 613 grams total, 9.2-10.7 cm
Ex Lincolnshire, UK, collection. -
Natural History - Knightia Fossil Fish Plate
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £104
The rectangular matrix containing four Knightia alta sp. fish. 955 grams, 24.2 cm
From the 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.
