The Evolution of Man : A Popular Scientific Study of the Principal Points of Human Ontogeny and Phylogeny PDF

by Ernst Haeckel

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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)