Nature, Том 23Sir Norman Lockyer Macmillan Journals Limited, 1881 |
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Стр. 228
... Metatheria . And if there were any known animals which combined these characters , with a complete double dentition , unmodified pentadactyle manus and pes , and normal uterogestation , they would furnish us the exact transition between ...
... Metatheria . And if there were any known animals which combined these characters , with a complete double dentition , unmodified pentadactyle manus and pes , and normal uterogestation , they would furnish us the exact transition between ...
Стр. 229
... Metatheria . Hence we may term forms which have reached this stage the Eutheria . It is a fact , curiously in accordance with what might be expected on evolutionary principles , that while the exist- ing members of the Prototheria and ...
... Metatheria . Hence we may term forms which have reached this stage the Eutheria . It is a fact , curiously in accordance with what might be expected on evolutionary principles , that while the exist- ing members of the Prototheria and ...
Стр. 230
... METATHERIA . MAMMALIA . 1. Teats . 2. Allantoic placenta . 3. Ureteric apertures ento- cystic . 4. Small malleus . 5. Reduced coracoid . 6. Epipubis rudimentary or absent . 7. Two occipital condyles and an osseous basi- occipital . 8 ...
... METATHERIA . MAMMALIA . 1. Teats . 2. Allantoic placenta . 3. Ureteric apertures ento- cystic . 4. Small malleus . 5. Reduced coracoid . 6. Epipubis rudimentary or absent . 7. Two occipital condyles and an osseous basi- occipital . 8 ...
Стр. 231
... Metatheria ....... Marsupiala . O 7. Prototheria ...... Monotremata . 6. Hypotheria .. ...... 5. Amphibia O X ............... Amphibia 4. Herpetichthyes . Dipnoi Representative Groups . ( Aves . ropsida Reptilia . Saurop X X *** O X ...
... Metatheria ....... Marsupiala . O 7. Prototheria ...... Monotremata . 6. Hypotheria .. ...... 5. Amphibia O X ............... Amphibia 4. Herpetichthyes . Dipnoi Representative Groups . ( Aves . ropsida Reptilia . Saurop X X *** O X ...
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