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If true, it would make Bruhathkayosaurus the single largest terrestrial animal to have walked the earth and would have rivalled the largest blue whale recorded. [ 409 ] BYU 9024, a massive cervical vertebra found in Utah , [ 410 ] may belong to a Barosaurus lentus [ 411 ] [ 412 ] or Supersaurus vivianae [ 413 ] of a huge size, possibly 45–48 ...
Largest prehistoric organisms Notes ^ Carbonated bio apatite from a megalodon tooth (of unknown source location) dated to 5.75 ± 0.9 Ma in age has been analyzed for isotope ratios of oxygen ( 18 O/ 16 O) and carbon ( 13 C/ 12 C), using a carbonate clumped-isotope thermometer methodology to yield an estimate of the ambient temperature in that ...
List of Asian dinosaurs; List of Australian and Antarctic dinosaurs; List of dinosaurs and other Mesozoic reptiles of New Zealand; List of European dinosaurs; List of Indian and Madagascan dinosaurs; List of North American dinosaurs. List of Appalachian dinosaurs; List of archosaurs of the Chinle Formation; List of dinosaurs of the Morrison ...
Pliosaurs dominated the oceans at a time when dinosaurs roamed the land. The unearthed fossil is about 150 million years old, almost 3 million years younger than any other pliosaur find.
Many of the so-called 'dinosaur' remains found on New Zealand are actually mosasaurs and plesiosaurs [citation needed], both being Mesozoic predatory marine reptiles. The largest mosasaur currently on public display is Bruce, a 65-70%-complete specimen of Tylosaurus pembinensis dating from the late Cretaceous Period, approximately 80 million ...
Basilosaurus (meaning "king lizard") is a genus of large, predatory, prehistoric archaeocete whale from the late Eocene, approximately 41.3 to 33.9 million years ago (mya). First described in 1834, it was the first archaeocete and prehistoric whale known to science. [2] Fossils attributed to the type species B. cetoides were discovered in the ...
The UK's biggest ever dinosaur trackway site has been discovered in a quarry in Oxfordshire. About 200 huge footprints, which were made 166 million years ago, criss-cross the limestone floor.
The generic name, composed of the Ancient Greek μέγας (megas) meaning "great" and Ancient Greek ἀράχνη (arachne) meaning "spider", translates to "great spider"; because the fossil was misidentified as a large, prehistoric spider. With a body length of 54 cm (21 in), Megarachne was a medium-sized eurypterid.