Thompsonian Transformations

Thompsonian transformations are a graphical method for studying the relations of the morphologies of organisms in terms of overall patterns of modifications to their shared geometries.

Keywords: morphometrics; biomathematics; homology; allometry; biomechanics

Figure 1. Transformation diagram showing how one fish species (the sunfish Orthagoriscus, on the right) can be derived by geometric deformation of the morphology of another (the porcupine fish Diodon, on the left). From Thompson (1917).
Figure 2. A Thompsonian transform relating the skull of a chimpanzee (left) to the skull of a baboon (right). From Thompson (1917).
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 References
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    book Calder WA (1996) "Size, Function, and Life History". Mineola: Dover.
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    book Lawlor R (1982) "Sacred Geometry". Philosophy and Practice. London: Thames & Hudson.
    Mayer E (1943) Book review. Anatomical Record 85: 111–116.
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    Raup DM (1961) The geometry of coiling in gastropods. Proceedings of the National Academy of Sciences of the USA 47: 602–609.
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    book Stewart I (1998) "Life's Other Secret". The New Mathematics of the Living World. London: Allen Lane.
    book Thompson D'Arcy W (1917) On Growth and Form. Cambridge: Cambridge University Press.
    book Thompson D'Arcy W (1942) On Growth and Form, 2nd edn. Cambridge: Cambridge University Press.
    book Thompson D'Arcy W (1992) On Growth and Form, abridged edition. Cambridge: Cambridge University Press. (With foreword by Gould.).
    book Thompson Ruth D'Arcy (1958) "D'Arcy Wentworth Thompson". The Scholar Naturalist 1860–1948 (with a Postscript by PB Medawar). London: Oxford University Press.
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 Further Reading
    book Brown JH and West GB (2000) Scaling in Biology. New York: Oxford University Press.
    book Gould SJ (2002) The Structure of Evolutionary Theory. Cambridge, MA: Belknap Press.
    book Horder TJ (2005) "D'Arcy Wentworth Thompson, on growth and form". In: Gratton–Guiness I (ed.) Landmarks Writings in Western Mathematics, 1640–1940, pp. 823–832. Amsterdam: Elsevier
    book Keller EF (2002) Making Sense of Life. Explaining Biological Developments with Models, Metaphors, and Machines. Cambridge, MA: Harvard University Press.
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Horder, Tim(Jan 2006) Thompsonian Transformations. In: eLS. John Wiley & Sons Ltd, Chichester. http://www.els.net [doi: 10.1038/npg.els.0004179]