Loading, please wait...
LOT 2534
Green River Knightia Fossil Fish Group
EOCENE PERIOD, CIRCA 56-33 MILLION YEARS B.P.
2 3/4 - 3 1/2 in. (140 grams, 72-90 mm).
Comprising three Knightia alta fish on individual matrices. [No Reserve]
ProvenanceFrom a Lincolnshire, UK, collection.
FootnotesIn 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:
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.
-
Fossil Shrimp in Matrix Group
Cretaceous Period, circa 145-65 million years B.P.Sold for (Inc. bp): £72
Comprising two rectangular matrices, one with a pair of Carpopenaeus sp. specimens, and one with a single Carpopenaeus sp. specimen and a small Knightia alta specimen to the reverse. 275 grams total, 66-98 mm
From Lebanon. From a Cambridgeshire, UK, collection. -
Polished 'Orca' Agate
Sold for (Inc. bp): £104
A freestanding display, polished to enhance the mimicking patterns and colours of an orca. 628 grams, 12.6 cm
From Madagascar. From a Cambridgeshire, UK, collection. -
Fossil Megalodon Giant Shark's Tooth
Pliocene Period, 5.2-2.5 million years B.P.Sold for (Inc. bp): £111
From Carcharocles megalodon showing serrations to both edges; repaired. 73 grams, 81 mm
From a Perthshire, collection, Scotland, UK.
Carcharodon megalodon is regarded as one of the largest and most powerful marine predators in vertebrate history and likely had a profound impact on structuring of the marine communities. Fossil remains indicate that this giant shark reached a length of more than 16 metres (52 ft) and also affirm that it had a cosmopolitan distribution. Scientists suggest that in life it looked like a stockier version of the great white shark, Carcharodon carcharias.
