 | Zoologisch-Botanische Gesellschaft in Wien - 1903 - 638 páginas
...ornithologisches Glaubensbekenntnis niederlegt: „Accepting evolution äs an established faet — and it is difficult to understand how anyone who has...gaps, or .missing links' in the chain of existing an i mal fonns except äs they are eaused by the extinction of certain intermediate types." Möchten... | |
 | Robert Ridgway, Herbert Friedmann - 1901 - 796 páginas
...priority, so rigidly applied to genera and species, quite generally ignored. The synonymy of these higher groups, as given, is by no means complete,...are caused by the extinction of certain intermediate types;1 therefore, there can be no such groupas a family or genus (nor any other forthat matter) unless... | |
 | United States National Museum - 1901 - 804 páginas
...synonymy of these higher groups, as given, is by no means complete, however, but little time )>eing available for its compilation. The matter of determining...are caused by the extinction of certain intermediate types;1 therefore, there can be no such group as a family or genus (nor any other for that matter)... | |
 | United States National Museum - 1901 - 906 páginas
...priority, so rigidly applied to gen era and species, quite generall}' ignored. The synonymy of these higher groups, as given, is by no means complete,...are no "hard and fast lines," no gaps, or "missing links1' in the chain of existing animal forms except as they are caused by the extinction of certain... | |
 | United States National Museum - 1901 - 814 páginas
...''family"1 or a "genus'' being involved, and, moreover, one concerning which there is much differenceof opinion among systematists. the author's views may...forms except as they are caused by the extinction of cerüiin intermediate types;1 therefore, there can be no such groupas a family or genus (nor any other... | |
 | Zoologisch-Botanische Gesellschaft in Wien - 1903 - 664 páginas
...denen der Verfasser sein ornithologisches Glaubensbekenntnis niederlegt: „Accepting evolution äs an established fact — and it is difficult to understand...links* in the chain of existing animal forms except äs they are caused by the extinction of certain intermediate types." Möchten doch endlich auch die... | |
 | Zoologisch-Botanische Gesellschaft in Wien - 1902 - 654 páginas
...denen der Verfasser sein ornithologisches Glaubensbekenntnis niederlegt: „Accepting evolution äs an established fact — and it is difficult to understand how anyone who h äs studied the subject seriously can by any possibility believe otherwise — there are no ,hard... | |
 | Zoologisch-Botanische Gesellschaft in Wien - 1903 - 644 páginas
...denen der Verfasser sein ornithologisches Glaubensbekenntnis niederlegt: „Accepting evolution äs an established fact — and it is difficult. to understand...lines', no gaps, or ,missing links' in the chain of eiisting animal forms eicept äs they are caused by the extinction of certain intermediate types."... | |
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The question of what constitutes a "family" or a "genus" being involved, and, moreover, one concerning which there is much difference of opinion among systematists, the author's views may be stated, in order to make clear the principles which have been... 