(from the article `Triassic Period`) ...reliable radiometric data, which are used to establish absolute age. Therefore, the relative ages of Triassic sedimentary rocksderived from the ...
Found on http://www.britannica.com/eb/a-z/b/66
biochronology 1. In geology, the study of the age of the earth based on the relative dating of rocks and geologic events by the use of fossil evidence. 2. The dating of biological events using biostratigraphic or paleontological methods.
Found on http://www.wordinfo.info/words/index/info/view_unit/2819/8
Biochronology is the dating of biological events using biostratigraphic or palaeontological methods. ...
Found on http://en.wikipedia.org/wiki/Biochronology
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