Origin of Silurian
Examples from the Web for silurian
In this brief sketch it is quite impossible to relate the many changes of species and genera during the Silurian.The Elements of Geology|William Harmon Norton
Snakes developed in the Silurian Era, some twenty million years ago.Carmen Ariza|Charles Francis Stocking
Are not the beings of the Silurian and Devonian epoch prophecies of the forms which were evolved out of them?Studies in the Out-Lying Fields of Psychic Science|Hudson Tuttle
We know as yet no Silurian animal that lived on the land or breathed air.The Story of the Earth and Man|J. W. Dawson
The rocks of these two earlier periods are those of the Cambrian and Silurian groups.
1708, "pertaining to the Silures," from Latin Silures "ancient British tribe inhabiting southeast Wales." Geological sense is from 1835, coined by Sir Roderick Impey Murchison (1792-1871) because rocks of this period are especially frequent in Wales.