Time Tree: the timescale of life

TimeTree is jointly directed by Blair Hedges (Pennsylvania State University) and Sudhir Kumar (Arizona State University). It was developed jointly by Penn State University and Arizona State University with funding from the National Science Foundation, NASA Astrobiology Institute, and Science Foundation of Arizona.

TimeTree provides a search utility that allows exploration of the thousands of divergence times among organisms in the published literature. A tree-based (hierarchical) system is used to identify all published molecular time estimates bearing on the divergence of two chosen taxa, such as species, compute summary statistics, and present the results. Names of two taxa can be compared with the results presented on a single page. The last name of an author can also be used to find divergence times published by that person.

Visit the TimeTree site at: www.timetree.org