Steven M. Goodman is the MacArthur Field Biologist at the Field Museum, Chicago, and he is based in Antananarivo, Madagascar. He is coeditor of "The Natural History of Madagascar "and "Atlas of Selected Land Vertebrates of Madagascar," the former published and the latter distributed by the University of Chicago Press. He is also a founding member of the Association Vahatra, a Malagasy organization dedicated to the advancement of science on Madagascar, particularly conservation education and research. William L. Jungers is distinguished teaching professor and chair of anatomical sciences at Stony Brook University s School of Medicine. Velizar Simeonovski is an artist based in Chicago who specializes in reconstructions of extinct species and prehistoric landscapes."