Evolution and the Scala Naturae
Scale of nature; Phylogenetic scale; Evolutionary scale
A hierarchical ranking of animals based on Aristotelian notions of perfection, with humans at the top. It has often been used incorrectly as a model for vertebrate evolution.
In seeking to find order and relationship in the biological world, the Greek scientist and philosopher, Aristotle (384–322 B.C.) devised a classification scheme for animals that came to be known as the scala naturae in its Latin translation from Greek. In Latin, scala means “ladder” or “flight of steps” and naturae means “of nature” or “of the universe”. Aristotle’s idea was that living things could be assigned a hierarchical position on this metaphorical ladder that would represent their degree of perfection [1,2,3]. He placed humans on the top rung and other creatures of the known world on progressively lower rungs. He based his classification system on various biological characteristics that he could observe, such as...
- 1.Aristotle (1910) Historia Animalium. Clarendon Press, Oxford, UK (Translated by W Ogle)Google Scholar
- 2.Aristotle (1912) De Partibus Animalium. Clarendon Press, Oxford, UK (Translated by W Ogle)Google Scholar
- 3.Aristotle (1912) De Generatione Animalium. Clarendon Press, Oxford, UK (Translated by A Platt)Google Scholar
- 5.Lovejoy AO (1936) The great chain of being. Harvard University Press, Cambridge, MAGoogle Scholar
- 6.Hodos W, Campbell CBG (1990) Evolutionary scales and comparative studies of cognition. In: Kesner R, Olton D (eds) Animal cognition. Erlbaum, Hillsdale, NJ, pp 1–21Google Scholar
- 7.Butler AB, Hodos W (2005) Comparative vertebrate neuroanatomy: evolution and adaptation, 2nd edn. Wiley-Liss, Hoboken, NJGoogle Scholar
- 8.Hofman MA (2001) Evolution and complexity of the human brain: some organizing principles. In: RothG, Wullimann ME (eds) Brain evolution and cognition. Wiley, New York, pp 501–521Google Scholar
- 9.Jerison HJ (2001) The evolution of neural complexity. In: Roth G, Wullimann ME (eds) Brain evolution and cognition. Wiley, New York, pp 521–553Google Scholar
- 10.Carroll RL (1988) Vertebrate paleontology and evolution. Freeman, New YorkGoogle Scholar
- 11.Ayala EJ (1988) Can “progress” be defined as a biological concept? In: Nitecki MH (ed) Evolutionary progress. University of Chicago Press, Chicago Press, IL, pp 75–96Google Scholar
- 12.Gould SJ (1988) On replacing the idea of progress with an operational notion of directionality. In: Nitecki MH (ed) Evolutionary progress. University of Chicago Press, Chicago, IL, pp 319–338Google Scholar