Carbon 14 dating dinosaur bones
) is only 5,730 years—that is, every 5,730 years, half of it decays away.After two half lives, a quarter is left; after three half lives, only an eighth; after 10 half lives, less than a thousandth is left.
Most research conducted since the 1970s, however, has indicated that all dinosaurs were active animals with elevated metabolisms and numerous adaptations for social interaction. Evidence suggests that egg laying and nest building are additional traits shared by all dinosaurs.Researchers at Imperial College in London had low expectations when they began analyzing eight dinosaur fossils unearthed at the Dinosaur Park Formation in Alberta, Canada, some 100 years ago.Most of the bones, which dated to the Cretaceous period, were in fragments; the pieces that remained were of below-average quality.Their dominance continued through the Jurassic and Cretaceous periods and ended when the Cretaceous–Paleogene extinction event led to the extinction of most dinosaur groups 66 million years ago.The fossil record indicates that birds are modern feathered dinosaurs, Throughout the remainder of this article, the term "dinosaur" is sometimes used generically to refer to the combined group of avian dinosaurs (birds) and non-avian dinosaurs; at other times it is used to refer to the non-avian dinosaurs specifically, while the avian dinosaurs are sometimes simply referred to as "birds".C at all if they really were over a billion years old, yet the radiocarbon lab reported that there was over 10 times the detection limit.
Thus they had a radiocarbon ‘age’ far less than a million years!
This article deals primarily with non-avian dinosaurs.
Dinosaurs are a varied group of animals from taxonomic, morphological and ecological standpoints.
Even so, scientists have found intact soft tissue in dinosaur bones before.
The most famous case dates to 2005, when Mary Schweitzer of North Carolina State University found collagen fibers in the fossilized leg bone of a Tyrannosaurus rex.
(See 60 similar discoveries.) Here, RSR presents the scientific journals reporting, the kinds of biological material found so far, and the dinosaurs yielding up these exciting discoveries: Scientific Journals: , and others below in our chronological catalog, "the web's most complete list of dinosaur soft tissue discoveries," as published in many leading journals, according to a co-author of one of those papers.