French biologist Jean-Baptiste Pierre Antoine de Monet de Lamarck (1744–1829) is credited with coining the term “biology” (from the Greek terms bios, meaning “life,” and logy, meaning “study of”) in 1802 to describe the science of life. He was also the first to publish a version of an evolutionary tree that described the ancestral relationships among species (an early classification system), first to distinguish between vertebrates and invertebrates—and is often considered one of the first evolutionists.