Divergence time analyses have become increasingly popular over the past several decades, partly due to the proliferation of molecular data, but also because of the development of methods that do not assume a strict molecular clock. In this review, I provide a brief background to the topic, then highlight several methods for “relaxing” the assumptions of a strict molecular clock. I discuss the pros and cons of many of these methods. Finally, I discuss the various techniques for incorporating fossils in molecular studies to estimate absolute ages of clades.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 40 • No. 1