This geologic system was proposed in 1835 by R.I. Murchison and later explained in an 1839 book of the same name.
This geologic system was proposed in 1835 by R.I. Murchison and later explained in an 1839 book of the same name. The basis of the system was the identification of successive fossil types with broad geographic distributions that always follow in the same relative stratigraphic order wherever they occur. Based in part on the earlier work of William Buckland, it was later divided into three systems, two of which were the Cambrian and Ordovician. FTP, name this system, or the period that shares its name, which followed the Ordovician and preceded the Devonian periods.
This geologic system was proposed in 1835 by R.I. Murchison and later explained in an 1839 book of the same name.
{Silurian} system