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My point here is that, when we are talking about gaps of this magnitude, there is no difference whatever in the interpretations of `punctuationists' and `gradualists'.Both schools of thought despise so-called scientific creationists equally, and both agree that the major gaps are real, that they are true imperfections in the fossil record.I have not been able to find a satisfactory way of distinguishing between italicized and quoted text).Text in [brackets] represents my editorial annotation.
I endeavoured, also, to show that intermediate varieties, from existing in lesser numbers than the forms which they connect, will generally be beaten out and exterminated during the course of further modification and improvement.
Whilst the bed of the sea is stationary or is rising, or when very little sediment is being deposited, there will be blanks in our geological history.
The crust of the earth is a vast museum; but the natural collections have been made only at intervals of time immensely remote.
In the sixth chapter I enumerated the chief objections which might be justly urged against the views maintained in this volume. One, namely the distinctness of specific forms, and their not being blended together by innumerable transitional links, is a very obvious difficulty.
I assigned reasons why such links do not commonly occur at the present day, under the circumstances apparently most favourable for their presence, namely on an extensive and continuous area with graduated physical conditions.
Because of these relations, there is a direct connection between atmospheric carbon dioxide and the amount of dissolved calcium ion in sea water. One look at the rest of any texbook on sedimentology, and you will realize that most limestonare not inorganic anyway.