Willi Hennig
Emil Hans Willi Hennig was a German biologist and zoologist who is considered the founder of phylogenetic systematics, otherwise known as cladistics. In 1945 as a prisoner of war, Hennig began work on his theory of cladistics, which he published in German in 1950, with a substantially revised English translation published in 1966. With his works on evolution and systematics he revolutionised the view of the natural order of beings. As a taxonomist, he specialised in dipterans.
20 April 1913
Born on the same birth date (20 April 1913): Mimis Fotopoulos
Born on the same birth day (20 April): Adolf Schärf • Alan Arnett McLeod • Allan Houston • Carmen Electra • Daniel Varoujan • James Harcourt • Johannes Agricola • Konstantin Lavronenko • Massimo D'Alema • Miran Bakhsh • Nasiba Zeynalova • Phil Hill • Renata of Lorraine • Richard Hillary • Rita Dionne-Marsolais • Ryan O'Neal • Sebastian Faulks • Wop May
Born in the same month (April 1913): Diosa Costello • Jean Fournet • Keiko Fukuda • Kermit Tyler • Louise Currie • Mimis Fotopoulos • Nikolaos Roussen • Norman Parkinson • Per Borten • Rosemary Lane (actress) • Ruth Smith (artist) • Stefan Heym