TimeTree: A public knowledge-base of divergence times among organisms

S. Blair Hedges, Joel Dudley, Sudhir Kumar

Research output: Contribution to journalArticlepeer-review

879 Scopus citations


Summary: Biologists and other scientists routinely need to know times of divergence between species and to construct phylogenies calibrated to time (timetrees). Published studies reporting time estimates from molecular data have been increasing rapidly, but the data have been largely inaccessible to the greater community of scientists because of their complexity. TimeTree brings these data together in a consistent format and uses a hierarchical structure, corresponding to the tree of life, to maximize their utility. Results are presented and summarized, allowing users to quickly determine the range and robustness of time estimates and the degree of consensus from the published literature.

Original languageEnglish (US)
Pages (from-to)2971-2972
Number of pages2
Issue number23
StatePublished - Dec 1 2006

ASJC Scopus subject areas

  • Statistics and Probability
  • Biochemistry
  • Molecular Biology
  • Computer Science Applications
  • Computational Theory and Mathematics
  • Computational Mathematics


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