405 मिलियन से 345 मिलियन साल पहले; मछलियों और उभयचर और अमोनियों की उपस्थिति का पूर्वनिर्धन

Noun:

डेवनशायर का (निवासी),

devonian's Usage Examples:

The Devonian rocks of Canada (New Brunswick) have yielded several fossils which are undoubtedly wings of Hexapods.

In the extreme north-east are found the oldest rocks in the state - lower Devonian (the New Scotland beds of New York) and, not so old, an extension of the Lower Carboniferous which underlies the Warrior coalfields of Alabama, and which consists of cherts, limestones, sandstones and shales, with a depth of 800 to 900 ft.

The Falkland Islands consist entirely, so far as is known, of the older Palaeozoic rocks, Lower Devonian or Upper Silurian, slightly metamorphosed and a good deal crumpled and distorted, in the low grounds clay slate and soft sandstone, and on the ridges hardened sandstone passing into the conspicuous white quartzites.

and central Russia, where only the Middle and Upper Devonian divisions are found.

and middle Russia they contain a special fauna, and it appears that the Lower Devonian series of W.

The Devonian dolomites, limestones and red sandstones cover immense tracts and appear on the surface over a much wider area.

The oldest rocks of Elba consist of schist and serpentine which in the eastern part of the island are overlaid by beds containing Silurian and Devonian fossils.

The coal-seams must have been formed in wellwatered, lowland forests, at the foot of a high mountain range, built up by the Devonian earth movements.

The Upper Devonian was a period of marine retreat; the crustal disturbances of the Lower Devonian were renewed and great quartz-pebble beaches were formed on the rising shore lines, producing the West Coast Range conglomerates of Tasmania, and the similar rocks to the south-east of Mansfield in Victoria.

The Devonian system includes a complex series of deposits, which are of most interest in eastern Australia.

devonian's Meaning':

from 405 million to 345 million years ago; preponderance of fishes and appearance of amphibians and ammonites