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John Graham Kerr

Sir John Graham Kerr FRS FRSE FLS FZS LLD (18 September 1869 – 21 April 1957) was a Scottish zoologist at Cambridge who travelled to South America in the swamps of the Gran Chaco in Paraguay. Here he found the South American lungfish (Lepidosiren) eaten by the native peoples and collected embryos for his staging sequence.

He contributed an edition on the lungfish development in the historic series of "normal plates (stages) of development".

Kerr JG. Normal Plates of the Development of the South American and African Lungfish Embryos (Lepidosiren paradoxa and Protopterus annectens). (1909) Vol. 10 in series Normal plates of the development of vertebrates (Normentafeln zur Entwicklungsgeschichte der Wirbelthiere) Fisher, Jena., Germany.

Kerr JG. Text-Book of Embryology II (1919) MacMillan and Co., London.


Wellcome Library, London Sir John Graham Kerr. Photograph by T. & R. Annan & Sons Ltd.


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Cite this page: Hill, M.A. (2024, March 3) Embryology John Graham Kerr.jpg. Retrieved from

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