Page:Early Man in Britain and His Place in the Tertiary Period.djvu/157

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The proportion of eight Pleiocene survivals as compared with twenty incoming species in a total of twenty-eight, marks the enormous revolution which took place in the fauna of Europe at the close of the Pleiocene age, a revolution that is still further emphasised by the living species, amounting to no less than thirteen, as compared with the solitary living Pleiocene species.

The forest-bed, in which the fauna and flora above mentioned are met with, extends from the base of the cliffs of Norfolk from between high and low water mark out to sea, passing inland under the cliff, in which it is covered up by strata that testify to the gradual lowering