Ernst Heinrich Philipp August Haeckel (German: [ɛʁnst ˈhɛkl̩]; 16 February 1834 – 9 August 1919) was a German zoologist, naturalist, eugenicist, philosopher...

biogenetic law or embryological parallelism—often expressed using Ernst Haeckel's phrase "ontogeny recapitulates phylogeny"—is an historical hypothesis...

in the bosom of the mystical body of Christ". The term was used by Ernst Haeckel in his book The Wonders of Life where (p. 342) the phronema is the name...

as seven castes. Like most of Darwin's supporters,[citation needed] Ernst Haeckel (1834–1919) put forward a doctrine of evolutionary polygenism based...

[citation needed] The taxon Monera was first proposed as a phylum by Ernst Haeckel in 1866. Subsequently, the phylum was elevated to the rank of kingdom...

been a source of quite some controversy, both now and in the past. Ernst Haeckel at the University of Basel pioneered in this field. By comparing different...

Welträthsel in several of his writings) and with the biologist-philosopher Ernst Haeckel, who, as a professor of zoology at the University of Jena, wrote the...

Ernst Haeckel, a.k.a. Häckel (5 April 1890 in Gemünden am Main – 26 September 1967) was a German general who was awarded the Knights Cross of the Iron...

Challenger expedition, various species of siphonophores were collected. Ernst Haeckel attempted to conduct a write up of all of the species of siphonophores...

Nature) is a book of lithographic and halftone prints by German biologist Ernst Haeckel. Originally published in sets of ten between 1899 and 1904 and collectively...