Le Règne Animal (lit. 'The Animal Kingdom') is the most famous work of the French naturalist Georges Cuvier. It sets out to describe the natural structure of the whole of the animal kingdom based on comparative anatomy, and its natural history. Cuvier divided the animals into four embranchements ("Branches", roughly corresponding to phyla), namely vertebrates, molluscs, articulated animals (arthropods and annelids), and zoophytes (cnidaria and other phyla). The work appeared in four octavo volumes in December 1816 (although it has "1817" on the title pages); a second edition in five volumes was brought out in 1829–1830 and a third, written by twelve "disciples" of Cuvier, in 1836–1849. In this classic work, Cuvier presented the results of his life's research into the structure of living and fossil animals. With the exception of the section on insects, in which he was assisted by his friend Pierre André Latreille, the whole of the work was his own. It was translated into English many times, often with substantial notes and supplementary material updating the book in accordance with the expansion of knowledge. It was also translated into German, Italian and other languages, and abridged in versions for children. Le Règne Animal was influential in being widely read, and in presenting accurate descriptions of groups of related animals, such as the living elephants and the extinct mammoths, providing convincing evidence for evolutionary change to readers including Charles Darwin, although Cuvier himself rejected the possibility of evolution. Source: Wikipedia (en)