Nomogenesis: Or, Evolution Determined by LawM.I.T. Press, 1969 - Всего страниц: 477 |
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Стр. 141
... fish sailing fishes occur in these fishes the dorsal fin attains such a length and is so high , that , by protruding it from the water , they use it as a sail , swimming with the wind . This has been observed to occur by such a ...
... fish sailing fishes occur in these fishes the dorsal fin attains such a length and is so high , that , by protruding it from the water , they use it as a sail , swimming with the wind . This has been observed to occur by such a ...
Стр. 270
... fishes ( Pleuronectidae ) and the anchovies ( Engraulidae ) : thus the northern flat- fishes have 50-60 vertebrae , while in the tropical ones the number of vertebrae falls to 35 ; the species of the tropical genus of anchovies ...
... fishes ( Pleuronectidae ) and the anchovies ( Engraulidae ) : thus the northern flat- fishes have 50-60 vertebrae , while in the tropical ones the number of vertebrae falls to 35 ; the species of the tropical genus of anchovies ...
Стр. 342
... Fish - like animals . Without paired extremities ; jaws are either wanting , or , if present , are without teeth . Series I. Marsipobranchii ( or Cyclostomi ) . Lam- prey - like animals . Class 1. Myxini . Hag - fishes . Class 2 ...
... Fish - like animals . Without paired extremities ; jaws are either wanting , or , if present , are without teeth . Series I. Marsipobranchii ( or Cyclostomi ) . Lam- prey - like animals . Class 1. Myxini . Hag - fishes . Class 2 ...
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