Paradise Post 3 Comments Carbon-14-dated dinosaur bones are less than 40,000 years old. Researchers have found a reason for the puzzling survival of soft tissue and collagen in dinosaur bones — the bones are younger than anyone ever guessed. Carbon-14 C-14 dating of multiple samples of bone from 8 dinosaurs found in Texas, Alaska, Colorado, and Montana revealed that they einosaur only 22,000 to 39,000 years old.
The bone was 68 million years old, and conventional wisdom about fossilization is that all soft tissue, from blood to brains , decomposes. Only hard parts, like bones and teeth, can become fossils. But for some people, the discovery raised a different question.
This helps us to understand how that species fits into the evolutionary tree of change; when did they first appear and when did the last of their kind walk this Earth? Radiometric Dating Radiometric dating involves exploiting the radioactive decay of unstable atoms naturally present in the structure of bones and rocks. This means that it is almost impossible for isotopes to enter or leave the premises. By comparing the ratio of unstable isotopes vs. Which Radioisotope to Choose?
radioactive dinosaur bones
It was big news indeed last year when Schweitzer announced she had discovered blood vessels and structures that looked like whole cells inside that T. The finding amazed colleagues, who had never imagined that even a trace of still-soft dinosaur tissue could survive. After all, as any textbook will tell you, when an animal dies, soft tissues such as blood vessels, muscle and skin decay and disappear over time, while hard tissues like bone may gradually acquire minerals from the environment and become fossils. Schweitzer, one of the first scientists to use the tools of modern cell biology to study dinosaurs, has upended the conventional wisdom by showing that some rock-hard fossils tens of millions of years old may have remnants of soft tissues hidden away in their interiors. And the new findings might help settle a long-running debate about whether dinosaurs were warmblooded, coldblooded—or both.
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