..." These small-grained varieties of wheat and barley are believed by Heer to be the parent-forms of certain existing allied varieties, which have supplanted their early progenitors... 
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
... It would, therefore, appear as if, during the reduction of their beaks, their wings had retained a little of that excess of length which is characteristic of their nearest relations and progenitors...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...What are calledhighly-bred fowls are, however,too often the deteriorated offspring of progenitors far below theoriginal stock...
Robert Jennings 「Sheep, Swine, and Poultry」
...A strange quarry for men whose paeliolithic progenitors hunted the woolly mastodon and many-horned rhinoceros and sabre-toothed tiger! ...
W. H. Hudson 「Birds in Town and Village」
...The animal knows what necessitytaught its progenitors, and it knows that only as aspontaneous impulse to do certain things...
John Burroughs 「Ways of Nature」
...Versions differ as to the number of worlds through which the progenitors of the Navaho passed...
Edward S. Curtis 「The North American Indian」
便利！手書き漢字入力検索