The Evolution of Man, Vol. 2 of 2: A Popular Scientific Study of the Principal Points of Human Ontogeny and Phylogeny

by Ernst Haeckel

Excerpt from The Evolution of Man, Vol. 2 of 2: A Popular Scientific Study of the Principal Points of Human Ontogeny and Phylogeny

Mammalian Character of Mam - Common Descent of all Mammals from a Single Parent-form (promammalian). - Bifurcation of the Amnion Animals into Two Main Lines: on the one side, Rep tiles and Birds, on the other, Mammals. - Date of the Origin of Mammals: the Trias Period. - The Three Main Groups or Sub classes of Mammals: their Genealogical Relations - Sixteenth Ancestral Stage Cloacal Animals (monotremata, or Ornithodelphia). - 'l'he Extinct Primitive Mammals (promammalz'a) and the Extant Beaked Animals (ornithostoma). - Seventeenth Ancestral Stage Pouched Animals (marsupialia, or Dz'delphia). - Extinct and Extant Pouched Animals - Their Intermediate Position between Mono tremes and Placental Animals - Origin and Structure of Placental Animals (placentalia, or - Formation of the Pla centa. - The Deciduous Embryonic Membrane (decidua). - Group of the Indecidua. And of the Deciduata. - The Formation of the Decidua (vera, serotina, reflexa) in Man and in Apes - Eighteenth Stage: Semi-apes (prosimice). - Nineteenth Stage: Tailed Apes (menocerca). - Twentieth Stage Man-like Apes (anthropoides). Speechless and Speaking Men (mali. Homines)

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550 pages, Hardcover

First published July 1, 2009

About the author

Ernst Heinrich Philipp August Haeckel (February 16, 1834 – August 9, 1919), also written von Haeckel, was an eminent German biologist, naturalist, philosopher, physician, professor and artist who discovered, described and named thousands of new species, mapped a genealogical tree relating all life forms, and coined many terms in biology, including anthropogeny, ecology, phylum, phylogeny, stem cell, and the kingdom Protista. Haeckel promoted and popularized Charles Darwin's work in Germany and developed the controversial recapitulation theory ("ontogeny recapitulates phylogeny") claiming that an individual organism's biological development, or ontogeny, parallels and summarizes its species' evolutionary development, or phylogeny.

The published artwork of Haeckel includes over 100 detailed, multi-colour illustrations of animals and sea creatures (see: Kunstformen der Natur, "Art Forms of Nature"). As a philosopher, Ernst Haeckel wrote Die Welträtsel (1895–1899, in English, The Riddle of the Universe, 1901), the genesis for the term "world riddle" (Welträtsel); and Freedom in Science and Teaching to support teaching evolution.