T rex soft tissue carbon dating

17 May

But going to the official conference site, the talk has clearly been removed.

Such a preserved specimen is called a "fossil" if it is older than some minimum age, most often the arbitrary date of 10,000 years.

Fossils may also consist of the marks left behind by the organism while it was alive, such as animal tracks or feces (coprolites).

These types of fossil are called trace fossils (or ichnofossils), as opposed to body fossils.

The observation that certain fossils were associated with certain rock strata led early geologists to recognize a geological timescale in the 19th century.

The development of radiometric dating techniques in the early 20th century allowed geologists to determine the numerical or "absolute" age of the various strata and thereby the included fossils.