I long ago suggested the hypothesis, that in the basin of the Thames there are indications of a meeting in the Pleistocene period of a northern and southern fauna.
Charles Lyell (1873). “The Geological Evidence of the Antiquity of Man with an Outline of Glacial and Post-tertiary Geology and Remarks on the Origin of Species with Special Reference to Mans First Appearance on the Earth by Charles Lyell”, p.202
