Comparative anatomy
Edward Tyson is regarded as the founder of modern comparative anatomy. He is credited with determining that whales and dolphins are, in fact, mammals. Also, he concluded that chimpanzees are more similar to humans than to monkeys because of their arms. Marco Aurelio Severino also compared various animals, including birds, in his "Zootomia democritaea", one of the first works of comparative anatomy. In the 18th and 19th century, great anatomists like George Cuvier, Richard Owen and Thomas Henry Huxley revolutionized our understanding of the basic build and systematics of vertebrates, laying the foundation for Charles Darwin's work on evolution. An example of a 20th-century comparative anatomist is Victor Negus, who worked on the structure and evolution of the larynx. Until the advent of genetic techniques like DNA sequencing, comparative anatomy together with embryology were the primary tools for understanding phylogeny, as exemplified by the work of Alfred Romer.
History of Animals
Walter Pagel comments that Aristotle "perceptibly influenced" the founders of modern zoology, the Swiss Conrad Gessner with his 1551–1558 "Historiae animalium", the Italian Ulisse Aldrovandi (1522–1605), the French Guillaume Rondelet (1507–1566), and the Dutch Volcher Coiter (1534–1576), while his methods of looking at time series and making use of comparative anatomy assisted the Englishman William Harvey in his 1651 work on embryology.