On the Origin of Species By Means of Natural Selection
On the Origin of Species By Means of Natural Selection
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In our eReader you can find the full English version of the book. Read On the Origin of Species By Means of Natural Selection Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book On the Origin of Species By Means of Natural Selection
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Still more recently, a Pyigoma, a member of a distinct sub-family of sessile cirripedes, has been discovered by Mr. Woodward in the upper chalk ; so that we now »1 Digitized by VjOOQIC CBap. X. Groups of A Hied Spectes, 285 have abundant evidence of the existence of this group of animalf during the aecondary period.
The case most frequently insisted on by palaeontologists of the apparently sudden appearance of a whole group of species, is that of the teleostean fishes, low down, according to Ag...assix, in the Chalk fieriod. This group includes the large majority of existing species.
But certain Jurassic and Triassio foims are now commonly admitted to be teleostean ; and even some palff ozoio forms have thus been dossed by one high authority. If the teleosteans had really appeared suddenly in the northern hemisphere at the commencement of the chalk formation, the fact would have been highly remarkable; but it would not have formed an insuperable difficulty, unless it could likewise have been shown that at the same period the species were suddenly and simultaneously developed in other quarters of the world.
What to read after On the Origin of Species By Means of Natural Selection?
You can find similar books in the "Read Also" column, or choose other free books by Darwin, Charles, 1809-1882 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Still more recently, a Pyigoma, a member of a distinct sub-family of sessile cirripedes, has been discovered by Mr. Woodward in the upper chalk ; so that we now »1 Digitized by VjOOQIC CBap. X. Groups of A Hied Spectes, 285 have abundant evidence of the existence of this group of animalf during the aecondary period.
The case most frequently insisted on by palaeontologists of the apparently sudden appearance of a whole group of species, is that of the teleostean fishes, low down, according to Ag...assix, in the Chalk fieriod. This group includes the large majority of existing species.
But certain Jurassic and Triassio foims are now commonly admitted to be teleostean ; and even some palff ozoio forms have thus been dossed by one high authority. If the teleosteans had really appeared suddenly in the northern hemisphere at the commencement of the chalk formation, the fact would have been highly remarkable; but it would not have formed an insuperable difficulty, unless it could likewise have been shown that at the same period the species were suddenly and simultaneously developed in other quarters of the world.
What to read after On the Origin of Species By Means of Natural Selection?
You can find similar books in the "Read Also" column, or choose other free books by Darwin, Charles, 1809-1882 to read onlineMoreLess
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