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LOT 2492
Fossil Tylosaurus Marine Dinosaur Vertebra
LATE CRETACEOUS PERIOD, CIRCA 92-66 MILLION YEARS B.P.
3 3/4 in. (622 grams, 96 mm).
The main body of a vertebra with two raised ridges underneath, likely a pygal or caudal vertebra; old inked collector's number 'VR26'. [No Reserve]
ProvenanceFrom near Harlan County Dam, Nebraska, USA.
From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.
Tylosaurus was an apex marine predator during the Late Cretaceous period, and is classified in the superfamily Mosasauroidea.
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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Fossil Pliomera Fisheri Trilobite in Matrix
Middle Ordovician Period, 485-470 million years B.P.Sold for (Inc. bp): £33
In a partially curled, defensive posture showing the characteristic notched pygidium. 83.3 grams, 66 mm
From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent. -
Very Large Megalodon Extinct Giant Shark's Fossil Tooth
Pliocene Epoch, circa 5.6 million years B.P.Sold for (Inc. bp): £494
A Carcharocles megalodon shark tooth, with serrations and polished tooth enamel. 351 grams, 14.5 cm
From a Lincolnshire, UK, collection.
Carcharodon megalodon is regarded as one of the largest and most powerful marine predators in vertebrate history and likely had a profound impact on the 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. -
Fossil Knightia Fish Plate
Eocene Period, circa 58-36 million years B.P.Sold for (Inc. bp): £39
Showing two Knightia alta fish on a rectangular limestone matrix with a partial third fish. 1.14 kg total, 20.5 x 14.5 cm
From Wyoming, USA. From the private collection of a Devon, UK, lady.
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 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.
