Nomogenesis: Or, Evolution Determined by LawM.I.T. Press, 1969 - Всего страниц: 477 |
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Стр. 120
... referred to true gymnosperms . " " We may thus trace the entire process of the reduction of the gametophyte , commencing with its flourishing con- dition in mosses , and proceeding with its gradual decline in the Pteridophyta , until we ...
... referred to true gymnosperms . " " We may thus trace the entire process of the reduction of the gametophyte , commencing with its flourishing con- dition in mosses , and proceeding with its gradual decline in the Pteridophyta , until we ...
Стр. 181
... referred Huxley ( 1868 ) , who claimed that birds owe their origin to forms similar to Compsognathus ; then Marsh ( 1877 ) , Baur , Cope , Menzbier ( 1887 , pp . 86 , 88 ) , 2 Mivart ( 1881 ) and Wiedersheim ( 1884 ) advanced the ...
... referred Huxley ( 1868 ) , who claimed that birds owe their origin to forms similar to Compsognathus ; then Marsh ( 1877 ) , Baur , Cope , Menzbier ( 1887 , pp . 86 , 88 ) , 2 Mivart ( 1881 ) and Wiedersheim ( 1884 ) advanced the ...
Стр. 284
... referred by Baker to the same sub - genus of Polyrhytis . It is remark- able that Polyrhytis , in so far as the sculpture of the shell is concerned , occupies the same position with regard to Lymnaea , as Costella does to Physa ; 2 the ...
... referred by Baker to the same sub - genus of Polyrhytis . It is remark- able that Polyrhytis , in so far as the sculpture of the shell is concerned , occupies the same position with regard to Lymnaea , as Costella does to Physa ; 2 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 |
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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