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Thomas Henry Huxley (1825-1895)
By: Samantha Hauserman
| Published: Nov 26, 2013
In nineteenth century Great Britain, Thomas Henry Huxley proposed connections between the development of organisms and their evolutionary histories,…
PeopleDarwin, Charles, 1809-1882EvolutionpaleontologyEmbryology
Etienne Geoffroy Saint-Hilaire (1772-1844)
By: Valerie Racine
| Published: Aug 05, 2013
Etienne Geoffroy Saint-Hilaire, commonly known as Geoffroy, studied animals, their anatomy and their embryos, and teratogens at the National Museum…
Geoffroy Saint-Hilaire, Etienne, 1772-1844TeratologyZoologyFrench RevolutionHomology theory
Human Evolution Inferred from Tooth Growth and Development
By: Kate MacCord
| Published: Mar 28, 2013
To study human evolution, researchers sometimes use microstructures found in human teeth and their knowledge of the processes by which those…
EvolutionteethDental EnamelFossilsHuman Evolution
Richard Woltereck's Concept of Reaktionsnorm
By: B. R. Erick Peirson
| Published: Sep 06, 2012
Richard Woltereck first described the concept of Reaktionsnorm (norm of reaction) in his 1909 paper 'Weitere experimentelle Untersuchungen uber Art-…
Woltereck, Richard, 1877-1944EvolutionDaphniaEmbryologyHeredity
Richard Woltereck (1877-1944)
By: B. R. Erick Peirson
| Published: May 13, 2012
Richard Woltereck was a German zoologist and hydrobiologist who studied aquatic animals and extended the concept of Reaktionsnorm (norm of reaction)…
PeopleEvolutionHeredityEmbryologyAquatic animals
Essay: Homology
By: Ingo Brigandt
| Published: Nov 23, 2011
Homology is a central concept of comparative and evolutionary biology, referring to the presence of the same bodily parts (e.g., morphological…
Homology (Biology)Morphology
Mechanistic Realization of the Turtle Shell
By: Guido Caniglia
| Published: Oct 10, 2011
Turtle morphology is unlike that of any other vertebrate. The uniqueness of the turtle's bodyplan is attributed to the manner in which the turtle's…
TurtlesEvolutionMorphology
Edward Stuart Russell (1887-1954)
By: Mark A. Ulett
| Published: Jun 29, 2010
Edward Stuart Russell was born 23 March 1887 to Helen Cockburn Young and the Reverend John N. Russell in Port Glasgow, Scotland. Friends and co-…
PeopleBiographyMorphologyhistoryphilosophy
Sir D'Arcy Wentworth Thompson (1860-1948)
By: Mark A. Ulett
| Published: Jun 29, 2010
Known by many for his wide-reaching interests and keen thinking, D'Arcy Wentworth Thompson was one of Britain's leading scientific academics in the…
PeopleBiographyMorphology
Lennart Nilsson (1922- )
By: Olivia Conley
| Published: Jun 24, 2010
Lennart Nilsson is a world-renowned photojournalist recognized for his exploratory images of the inside of the human body. Throughout his career,…
PeopleReproductionBiographyHuman DevelopmentMorphology