supplant

今年はダーウィン生誕２００周年、また「種の起源」 の発表から１５０周年と聞き、"The Origin of Species" を読みたいと思いました。　しかしながら結構量的にページ数が多そうなので、とりあえずPrefaceとIntroductionだけをダウンロードして読んでみました。
Introductionの文に "supplant" が何度も出てきます。
With respect to existing forms, we should remember that we have no right to expect (excepting in rare cases) to discover directly connecting links between them, but only between each and some extinct and supplanted form.
...
New and improved varieties will inevitably supplant and exterminate the older, less improved and intermediated varieties; and thus species are rendered to a large extent defined and distinct objects.
"supplant" を辞書で調べます。
・OneLook Quick Definitions: take the place or move into the position of ("The computer has supplanted the slide rule")
・American Herritage Dictionary: To displace and substitute for (another): The word processor has largely supplanted electric typewriters. See Synonyms at replace.
"The Origin of Species"は下記のＵＲＬから無料でダウンロードできます。
http://www.literature.org/authors/darwin-charles/the-origin-of-species/