Ralph Morris Buchsbaum (January 2, 1907 – February 11, 2002) was an American zoologist, invertebrate biologist, and ecologist. His book Animals Without Backbones, first published in 1938, was the first textbook in biology to be reviewed by Time and featured in Life. It has gone through several revisions and is still in print, and has been widely used as a textbook. It is still being used as of 2013.Due to his 1938 book, Buchsbaum became known as a popularizer of science.