In cooperation with Smithsonian Institution Press, Prof. Carl H. Ernst and ETI editor Ruud G.M. Altenburg have updated and extended Ernst and Barbour's standard work "Turtles of the World" (1989). This CD-ROM edition features multiple color photographs of essentially every recognized species of turtle and tortoise in the world. About 40 new species have been added and the taxonomy has been completely revised. Different modules within the program allow for hyper-linked browsing through higher taxa, species, and lower taxa, with sections on recognition, distribution, geographic variation, habitat, natural history, and conservation status. The geographic information system MapIt plots distributions of selected species on a set of quadrant maps, allowing for different scaled maps, the ability to compare distributions of pairs of species, map species density per quadrant, and check listings of species included per quadrant. An interactive key allows you to quickly identify turtles. All text is hyperlinked to an illustrated glossary covering 1000+ scientific and etymological terms."This new form of data presentation, a new publication medium for turtles, is well produced and definitely worth obtaining" - Chelonian Conservation and Biology.