Nomogenesis: Or, Evolution Determined by LawM.I.T. Press, 1969 - Всего страниц: 477 |
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Стр. 70
... extinction due to the same two causes.1 Every group of organisms in the course of a definite period attains its optimum , after which , obeying certain internal impulses concealed in the constitution of the organism , it becomes extinct ...
... extinction due to the same two causes.1 Every group of organisms in the course of a definite period attains its optimum , after which , obeying certain internal impulses concealed in the constitution of the organism , it becomes extinct ...
Стр. 200
... extinct great auk ( Alca impennis ) , the extinct New Zealand goose Cnemiornis , the New Zealand flightless " rails " Notornis and Ocydromus , the extinct " pigeons " Dididae ( the Dodos ) from the Mascarene islands , the New Zealand ...
... extinct great auk ( Alca impennis ) , the extinct New Zealand goose Cnemiornis , the New Zealand flightless " rails " Notornis and Ocydromus , the extinct " pigeons " Dididae ( the Dodos ) from the Mascarene islands , the New Zealand ...
Стр. 297
... extinction ) , and the extinct Aptornis , the keel is very small , and it is all but absent in the ground parrot or kakapo , Stringops , and in the extinct giant goose Cnemiornis . New Zealand is also the home of true ratites , i.e. the ...
... extinction ) , and the extinct Aptornis , the keel is very small , and it is all but absent in the ground parrot or kakapo , Stringops , and in the extinct giant goose Cnemiornis . New Zealand is also the home of true ratites , i.e. the ...
Содержание
THE STRUGGLE FOR EXISTENCE AND NATURAL | 1 |
Various types of the struggle for existence | 45 |
Is survival a privilege of the bearers of useful | 62 |
Авторские права | |
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Abel accidental according adapted adult allied America ammonites amphibians ancestors angiosperms Animals and Plants appear belonging Bennettitales birds bones butterflies Carinatae chance chap characters colour common complex Craniata Cretaceous Crossopterygii Darwin definite direction derived determined direction dicotyledons dinosaurs Dipnoi dorsal due to convergence embryo evolution exhibit external extinct female fins fishes formation forms Fürbringer genera genus groups gymnosperms hind-limbs independently insects instance Kuznetzov lamarckiana latter living Lotsy lower male mammals manifested means mimicry Monochlamydeae monocotyledons mutations natural selection number of individuals observed occur ontogeny opinion organisation Origin of Species Ornithischia orthogenesis Osborn parallel pectoral peculiar phenomena phylogeny Piperales placenta Placentalia Polycarpicae polyphyletic polyphyletic origin possess primitive produced Pseudosuchia pterosaurs Ratitae referred regarded remarkable reptiles resemblance Russian Saurischia says seeds shell similar skull structure struggle for existence sub-species teeth Teleostomi tendency tetrapods theory tion transformation varieties Vavilov vertebrates Vries wings