How To Use Geological period In A Sentence
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Human may define a geological period in the way dinosaurs -- and their vanishing act -- helped mark the Jurassic.
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But Darwin knew that the major animal groups-which modern biologists call "phyla" - appeared fully formed in what were at the time the earliest known fossil-bearing rocks, deposited during a geological period known as the Cambrian.
Evolution News & Views
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Later geological periods show similar patterns of sudden appearance, stasis and persistent chasms of difference between major groups.
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In a general sense we may regard the Bryophyta as derived from an algal ancestry, without being able to suggest the nature of the ancestral forms or the geological period at which they arose.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria"
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The following table shows the three eras and eleven geological periods that comprise the Phanerozoic.
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The following table shows the three eras and eleven geological periods that comprise the Phanerozoic.
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Evolutionists say these formations represent three different geological periods ranging from 35 to 245 million years.
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Similarly, Darwin also describes the formations of rocks and minerals from the catastrophic effects of dynamic geological periods.
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The geological period known as the Cambrian is marked by the rather sudden appearance of all the basic forms of animals now in existence.
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ganoid fishes swarmed during the earlier geological periods
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(If you need to refresh your memory about geological periods and evolution, check out this figure).
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The swell of Qinghai-Tibet Plateau resulted in northern drought and the desert formation and the development in the geological period.
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Because of this, clay becomes progressively less common in older geological periods and is almost never found in Precambrian formations.
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Geologists care about sediments, hammering away at them to uncover what they have to say about the past—especially the huge spans of time as the Earth passes from one geological period to another.
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Geological periods are defined with reference to a Global Boundary Stratotype Section and Point.
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These planation surfaces joined once each other imply that the vast southeastern part of China was in a state of peneplain during late geological period.
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The peaks of Mount Kilimanajaro are now naked of snow for the first time in our own 10,000-year long geological period.
