Phases of Animal Life, Past and PresentLongmans, Green, and Company, 1892 - Broj stranica: 248 |
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Stranica 43
... paddle - like plates , the most rapid motions in the water are effected by suddenly bending the tail beneath the body ... paddles fringed with hairs . These claws are thus quite different from the pointed claws of the common Shore - Crab ...
... paddle - like plates , the most rapid motions in the water are effected by suddenly bending the tail beneath the body ... paddles fringed with hairs . These claws are thus quite different from the pointed claws of the common Shore - Crab ...
Stranica 46
... paddle - like . The forward motion of these beetles is produced by these short paddles , while the curves are formed by the long fore limbs , which are darte ' out first from one side and then from the other , so as to change the ...
... paddle - like . The forward motion of these beetles is produced by these short paddles , while the curves are formed by the long fore limbs , which are darte ' out first from one side and then from the other , so as to change the ...
Stranica 53
... paddle - like form , and is thus nearly as efficient a propeller as the tail of a fish . These snakes always swim on ... paddles ; although it is quite clear that this structure is an acquired one . The Soft Turtles ( Trionyces ) , of ...
... paddle - like form , and is thus nearly as efficient a propeller as the tail of a fish . These snakes always swim on ... paddles ; although it is quite clear that this structure is an acquired one . The Soft Turtles ( Trionyces ) , of ...
Stranica 55
... paddles ; this being the extreme modification which limbs have undergone for the purposes of an aquatic life . Since , as shown by the absence of gills and the indications of remnants of a horny covering to the body , there is abundant ...
... paddles ; this being the extreme modification which limbs have undergone for the purposes of an aquatic life . Since , as shown by the absence of gills and the indications of remnants of a horny covering to the body , there is abundant ...
Stranica 55
Richard Lydekker. into paddles had not been carried to the same degree as in the Ichthyosaurs . The evidence for the derivation . of the Plesiosaurs from terrestrial reptiles is even fuller than in the case of the group last mentioned ...
Richard Lydekker. into paddles had not been carried to the same degree as in the Ichthyosaurs . The evidence for the derivation . of the Plesiosaurs from terrestrial reptiles is even fuller than in the case of the group last mentioned ...
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adapted Amphibians Anomodont antlers aquatic armour back-bone body bones bony plates Cabinet Edition carapace carnivorous chapter cheek-teeth Chelonians condyles corresponding creatures crocodiles Crown 8vo Deer developed Elephants elongated epoch Essays existing extinct feet fingers fins Fish-Lizards fishes fore fore-arm fossil front Giant Birds gradually groups of animals habits hind limbs hinder HISTORY horns horny shields Ichthyosaurs Iguanodon Illustrations Insects known Labyrinthodonts land-tortoises larvæ latter legs length less Lias living Long-Necked Lizards lower jaw Mammals Maps Marsupials Megalosaur metacarpals mode modification Monotremes occipital condyles Oölitic outer paddles pair pectoral fins peculiar pelvis period plastron Plesiosaur present Primeval Salamanders probably Pterodactyle remarkable represented in Fig reptiles resemblances ribs rudimentary saurians shell shown in Fig side skeleton skin skull specialised species structure surface swimming tail teeth Tertiary toes tooth tortoises totally true Tuatara Ungulates Vertebrates vols Wealden Whales whole wings Woodcuts
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