Example sentences of "[coord] [adj] million year " in BNC.
Next page| No | Sentence |
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| 1 | The southward march of the ice in the Pleistocene , which is to say during the last two or three million years , forced the animal southward in search of prey . |
| 2 | He starts by looking at longer-term human evolution over the past five or more million years , showing rightly that this is not a simple progressive ladder but a series of adaptive radiations . |
| 3 | Most of these are rather old , and do n't relate to the present Plate Tectonic picture , but rather to the situation ten or twenty million years ago . |
| 4 | It is known that some of the unicellular organisms in the sea today are only one or two million years old ( very little in geological terms ) , in fact they are probably as young as man himself ! |
| 5 | Two hundred and fifty million years ago , their dynasty came to an end . |
| 6 | Workers excavating the site for a new hotel have unearthed the remains of dinosaurs who inhabited the area ( 150 ) a hundred and fifty million years ago . |
| 7 | Its mountains — the highest , Tai Mo Shan , reaches 3,143 ft ( 958 m ) — were uplifted during the Jurassic period , between 130 and 190 million years ago . |
| 8 | The earliest forms resembling man , the hominoids , were in fact widely distributed in Africa and Asia between 15 and 10 million years ago . |
| 9 | Here we report evidence , from several sediment cores in the region , for repeated episodes of increased equatorial primary production between 15 and 4.4 million years ago , on a scale that is undocumented in the modern ocean . |
| 10 | We do n't know exactly how long ago the common ancestor of cows and peas lived , but fossil evidence suggests that it was somewhere between 1,000 and 2,000 million years ago . |
| 11 | In other words , the stress forces of the Earth , in particular stresses brought about by severe changes in climate , and the changing chemical nature of the surface , may have contributed to the great expansion , and occasional contraction , of species within narrow phyla that evolved from the recognizable solid life in the oceans ( oceanic life started , probably , in the Algonkian period , somewhere between 670 million and 600 million years ago ) . |
| 12 | During the warmer , wetter periods such as the Miocene , between 15 and 25 million years ago , many species now found in the tropics — gibbons and orang-utans , for example — ranged much further north . |
| 13 | The reason is that the Mentawi islands have been isolated from Sumatra for between 50,000 and one million years . |
| 14 | The genus appeared suddenly in the Atlantic at the end of the Pliocene without any local antecedent forms , and it is thought that transarctic migrations of several Pacific genera , including Buccinunl and Searlesja as well as Nucella , occurred through the Bering Strait , between a half and one million years before the onset of the first of the Pleistocene glaciations ( Franz and Merrill , 1980 ) . |
| 15 | Comparison of present rates of denudation and orogeny allowed Schumm ( 1963a ) to deduce that the production of a planation surface could take between 10 and 110 million years and to show that present rates of orogeny are up to 10 times faster than rates of denudation . |
| 16 | This happened in the late Tertiary between three and twelve million years ago . |
| 17 | In the period when these first marine invertebrates were evolving , between 600 and 1000 million years ago , erosion of the continents was producing great expanses of mud and sand on the sea bed around the continental margins . |
| 18 | In the mid-Pleistocene , between one and two million years ago , the sea level around South-East Asia was as much as 660 ft ( 200 m ) lower than it is today . |
| 19 | Four thousand years in four miles is forty thousand in forty miles , four hundred thousand in 400 miles and four million years in 4000 miles . |
| 20 | The last time that sea had covered that area was between a hundred and a hundred and thirty million years ago . |
| 21 | The prehistoric trees looked as if they had been felled the day before , but they were as sterile as hot bricks from a kiln and probably one hundred and thirty million years old . |
| 22 | BETWEEN twenty and thirty million years ago a new sort of mammal evolved that had an unusually long nose . |
| 23 | Between 10 and 20 million years ago , a variety of hominoid primates lived in Africa , Europe and Asia . |
| 24 | BETWEEN 38 and 54 million years ago , during the age known as the Eocene , the earth experienced a great expansion of mammalian species . |