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cambrian Beispielsätze
cambrian
1. Stephen Jay Gould"s failed attempt to explain the absence of fossils around the planet during the so-called Great Cambrian Leap
2. in what is known as the Cambrian explosion, with a widespread and diverse population
3. Because the trilobite was relatively large, populous and its shell fossilized well it’s probably the most well known animal from the time of the Cambrian
4. standards but by the end of the Cambrian explosion all of the major animal body types seen today had formed
5. that was well under way in Cambrian times
6. “Ok, I’ll go to pick it up in the morning and I can say bye to sister Cambrian as well
7. “I know this must be hard, but there are two sides to every story, if he decides that he wanted nothing to do with you, than remember that you still have your brothers and sisters here at the orphanage, and you also have sister Cambrian and me too
8. She decided to write a letter to mother Henderson and sister Cambrian to explain the situation, but she heard the phone ring
9. Mother Henderson and Mother Cambrian were both there, to be with her
10. This warming of the Earth enabled the proliferation of numerous species to live and survive in a period called the Cambrian Explosion
11. Similarly, the existence of the Cambrian Explosion is the period where many different species of life came into existence 500 million years ago, simultaneously in many different parts of the world, and during a relatively short period
12. And because these creatures from the Cambrian Explosion formed one of each of the 35 body plans that all existing living creatures are now based
13. Amid cheers that rent the welkin, responded to by answering cheers from a big muster of henchmen on the distant Cambrian and Caledonian hills, the mastodontic pleasureship slowly moved away saluted by a final floral tribute from the representatives of the fair sex who were present in large numbers while, as it proceeded down the river, escorted by a flotilla of barges, the flags of the Ballast office and Custom House were dipped in salute as were also those of the electrical power station at the Pigeonhouse and the Poolbeg Light
14. Consequently, if the theory be true, it is indisputable that before the lowest Cambrian stratum was deposited long periods elapsed, as long as, or probably far longer than, the whole interval from the Cambrian age to the present day; and that during these vast periods the world swarmed with living creatures
15. Croll estimates that about sixty million years have elapsed since the Cambrian period, but this, judging from the small amount of organic change since the commencement of the Glacial epoch, appears a very short time for the many and great mutations of life, which have certainly occurred since the Cambrian formation; and the previous one hundred and forty million years can hardly be considered as sufficient for the development of the varied forms of life which already existed during the Cambrian period
16. To the question why we do not find rich fossiliferous deposits belonging to these assumed earliest periods prior to the Cambrian system, I can give no satisfactory answer
17. Barrande added another and lower stage, abounding with new and peculiar species, beneath the then known Silurian system; and now, still lower down in the Lower Cambrian formation, Mr Hicks has found South Wales beds rich in trilobites, and containing various molluscs and annelids
18. Thus the words, which I wrote in 1859, about the existence of living beings long before the Cambrian period, and which are almost the same with those since used by Sir W
19. Nevertheless, the difficulty of assigning any good reason for the absence of vast piles of strata rich in fossils beneath the Cambrian system is very great
20. If, then, we may infer anything from these facts, we may infer that, where our oceans now extend, oceans have extended from the remotest period of which we have any record; and on the other hand, that where continents now exist, large tracts of land have existed, subjected, no doubt, to great oscillations of level, since the Cambrian period
21. But may not the areas of preponderant movement have changed in the lapse of ages? At a period long antecedent to the Cambrian epoch, continents may have existed where oceans are now spread out, and clear and open oceans may have existed where our continents now stand
22. Nor should we be justified in assuming that if, for instance, the bed of the Pacific Ocean were now converted into a continent we should there find sedimentary formations, in recognisable condition, older than the Cambrian strata, supposing such to have been formerly deposited; for it might well happen that strata which had subsided some miles nearer to the centre of the earth, and which had been pressed on by an enormous weight of superincumbent water, might have undergone far more metamorphic action than strata which have always remained nearer to the surface
23. The immense areas in some parts of the world, for instance in South America, of naked metamorphic rocks, which must have been heated under great pressure, have always seemed to me to require some special explanation; and we may perhaps believe that we see in these large areas the many formations long anterior to the Cambrian epoch in a completely metamorphosed and denuded condition
24. The sudden manner in which several groups of species first appear in our European formations, the almost entire absence, as at present known, of formations rich in fossils beneath the Cambrian strata, are all undoubtedly of the most serious nature
25. They would likewise be fatal, if the above Foraminifera, for instance, could be proved to have first come into existence during the Laurentian epoch, or the above Brachiopods during the Cambrian formation; for in this case, there would not have been time sufficient for the development of these organisms up to the standard which they had then reached
26. Seeing, for instance, that the oldest known mammals, reptiles, and fishes strictly belong to their proper classes, though some of these old forms are in a slight degree less distinct from each other than are the typical members of the same groups at the present day, it would be vain to look for animals having the common embryological character of the Vertebrata, until beds rich in fossils are discovered far beneath the lowest Cambrian strata—a discovery of which the chance is small
27. He may ask where are the remains of those infinitely numerous organisms which must have existed long before the Cambrian system was deposited? We now know that at least one animal did then exist; but I can answer this last question only by supposing that where our oceans now extend they have extended for an enormous period, and where our oscillating continents now stand they have stood since the commencement of the Cambrian system; but that, long before that epoch, the world presented a widely different aspect; and that the older continents, formed of formations older than any known to us, exist now only as remnants in a metamorphosed condition, or lie still buried under the ocean
28. Why, again, do whole groups of allied species appear, though this appearance is often false, to have come in suddenly on the successive geological stages? Although we now know that organic beings appeared on this globe, at a period incalculably remote, long before the lowest bed of the Cambrian system was deposited, why do we not find beneath this system great piles of strata stored with the remains of the progenitors of the Cambrian fossils? For on the theory, such strata must somewhere have been deposited at these ancient and utterly unknown epochs of the world's history
29. With respect to the absence of strata rich in fossils beneath the Cambrian formation, I can recur only to the hypothesis given in the tenth chapter; namely, that though our continents and oceans have endured for an enormous period in nearly their present relative positions, we have no reason to assume that this has always been the case; consequently formations much older than any now known may lie buried beneath the great oceans
30. When I view all beings not as special creations, but as the lineal descendants of some few beings which lived long before the first bed of the Cambrian system was deposited, they seem to me to become ennobled
31. As all the living forms of life are the lineal descendants of those which lived long before the Cambrian epoch, we may feel certain that the ordinary succession by generation has never once been broken, and that no cataclysm has desolated the whole world
32. Nor will I detain the House by relating the story of Captain Bradley, commander of the Cambrian, who in the face of the city of New York, and in contempt of the civil authority of the United States, dragged your citizens into slavish captivity