International Congress of Arts And Science volume 8
International Congress of Arts And Science volume 8
International Congress of Arts And Science 1904
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The Pliocene land-anifrials of the northern hemisphere agree in suggesting the same connection. Hence, the ultimate separation of the so-called Old and New Worlds is shown by fossils to be quite a modern event in geological history. Again, it has been proved by recent researches * that the mollusks, brachiopods, and trilobites found in the Devonian rocks of South Africa, agree much more closely with those occurring in the corre- sponding formations of South and North America than with those of ...Europe. The South African sea in the Devonian period seems there- fore to have extended directly into the American region, but to have been separated by a barrier from the European region. Similarly, there is evidence of circumscribed seas separated by land-barriers in the Triassic, Jurassic, and other epochs; and when the fossils from all parts are sufficiently well known, it will be possible to determine even some of the minor geographical features of each successive period. To restore the old continents and to discover their varying connec- tions and disintegrations is an especially fascinating problem.
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