Radiocarbon dating world history
Infamous as a place of torture and executions, and home to the British monarch's Crown Jewels, the Tower of London was also one of the world's oldest zoos.Researchers have been delving into the history of the royal menagerie, using animal remains to reveal the secrets of medieval lions once locked up in the Tower.Mr Miller told Ancient Origins that it is always desirable to carbon-14 date several fractions to minimize the possibility of errors which Miller requested and that essential concordance was achieved in the 1000's of years as with all bone fractions of ten other dinosaurs.Triceratops, a name meaning “three-horned face”, is a genus of herbivorous ceratopsid dinosaur that is said to have first appeared during the late Maastrichtian stage of the late Cretaceous period, about 68 million years ago in what is now North America, and became extinct in the Cretaceous–Paleogene extinction event 66 million years ago.Scientists use a technique called radiometric dating to estimate the ages of rocks, fossils, and the earth.Many people have been led to believe that radiometric dating methods have proved the earth to be billions of years old.Evolutionary geologists consider that the top three metres (10 feet) of the Marlstone Rock Bed represent the whole of the Tenuicostatum Zone, the basal zone of the Toarcian Stage, Amongst the remaining quarries still ‘working’ the top of the Marlstone Rock Bed are the Hornton Quarries at Edge Hill near the village of Ratley, on the north-western edge of the Edge Hill plateau, some 10½ km (6½ miles) north-west of the town of Banbury (Figures 2 and 3).
In the past, the outcrop has been quarried frequently for iron ore or building stone.Researchers from London's Natural History Museum and Liverpool John Moores University in Liverpool, England, dated the animals back to the 13th century."These lions were potent symbols of monarchy," said Hannah O'Regan, a biologist and zoo historian at Liverpool John Moores University.The Triceratops brow horn was excavated in May 2012 and stored at the Glendive Dinosaur and Fossil Museum.The Museum, which has since 2005 been in cooperation with the Paleochronology Group, a team of consultants in geology, paleontology, chemistry, engineering, and education, sent a sample of the outer portion of the Triceratops brow horn to Head of the Paleochronology Group Hugh Miller, at his request, in order to carry out Carbon-14 dating.
Scientists say big cat skulls found in a moat that protected the fortified palace provide clues to when and how these lions were kept.