Encyclopedia of Life. iTOL: Interactive Tree Of Life. Tree of Life Web Project Home. The Tree of Life Web Project (ToL) is a collaborative effort of biologists and nature enthusiasts from around the world.
On more than 10,000 World Wide Web pages, the project provides information about biodiversity, the characteristics of different groups of organisms, and their evolutionary history (phylogeny). Each page contains information about a particular group, e.g., salamanders, segmented worms, phlox flowers, tyrannosaurs, euglenids, Heliconius butterflies, club fungi, or the vampire squid. ToL pages are linked one to another hierarchically, in the form of the evolutionary tree of life.