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Published online by Cambridge University Press: 01 May 2009
We have already noticed that Barrande, as early as 1852, gave the name of Primordial Silurian to the rocks which, in Bohemia, were marked by the first fauna; although he, at the same time, recognized this as distinct from and older than the second fauna, discovered in the Llandeilo rocks, which Murchison had declared to represent the dawn of organic life.
Reprinted from the “Canadian Naturalist,” new series, vol. vi. no. 3, p. 304.
1 Reprinted from the “Canadian Naturalist,” new series, vol. vi. no. 3, p. 304.