Before this, archaeologists and scientists relied on deductive dating methods, such as comparing rock strata formations in different regions.
Chronometric dating has advanced since the 1970s, allowing far more accurate dating of specimens.
Far from being data, these dates are actually interpretations of the data.
As discussed before, the assumptions influence the interpretation of the data.
Using relative dating the fossil is compared to something for which an age is already known.
Different isotopes have different half-lives and sometimes more than one present isotope can be used to get an even more specific age of a fossil.
The Wheeler Formation has been previously dated to approximately 507 million year old, so we know the trilobite is also about 507 million years old.
But, how can we determine how old a rock formation is, if it hasn’t previously been dated?
Adrian Grahams began writing professionally in 1989 after training as a newspaper reporter.
His work has been published online and in various newspapers, including "The Cornish Times" and "The Sunday Independent." Grahams specializes in technology and communications.