Nomogenesis: Or, Evolution Determined by LawM.I.T. Press, 1969 - Всего страниц: 477 |
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Стр. 174
... ancestors of the Dipnoi and those of the Crossopterygii originate not far from one another ; somewhere from the vicinity may have diverged the ancestors of the Tetrapoda . It is now generally believed that the Dipnoi are derived ...
... ancestors of the Dipnoi and those of the Crossopterygii originate not far from one another ; somewhere from the vicinity may have diverged the ancestors of the Tetrapoda . It is now generally believed that the Dipnoi are derived ...
Стр. 181
... ancestors of birds . Such a solution was formerly actually arrived at by some zoologists and palaeontologists , with the reservation that not all birds have been derived from dinosaurs , but only the keel - less ( Ratitae ) or ostrich ...
... ancestors of birds . Such a solution was formerly actually arrived at by some zoologists and palaeontologists , with the reservation that not all birds have been derived from dinosaurs , but only the keel - less ( Ratitae ) or ostrich ...
Стр. 203
... ancestors of the Ratitae . It thus remains to seek for the ancestors of the Ratitae among the ancestors of the Galli- formes , Gruiformes , etc. , which would be endowed with characters revealing a much lower degree of specialisation ...
... ancestors of the Ratitae . It thus remains to seek for the ancestors of the Ratitae among the ancestors of the Galli- formes , Gruiformes , etc. , which would be endowed with characters revealing a much lower degree of specialisation ...
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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Часто встречающиеся слова и выражения
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