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Ernst Haeckel (1834-1919), German zoologist and evolutionistErnst Haeckel (1834-1919) German zoologist and evolutionist. Recapitulation theory Ontology recapitulates phylogeny. Wood engraving
Ernst Haeckel, German zoologist and evolutionist, 1899Ernst Haeckel (1834-1919) German zoologist and evolutionist. Recapitulation theory Ontology recapitulates phylogeny, 1899