Abstract
As a general rule, the more recent the fossil flora the more satisfactory the determinations of the plants comprised in it will appear, though the work of Williamson and others has made an exception of those of the Carboniferous period. In the late Tertiaries the species are so closely allied to those still living that comparisons are relatively easy; but as we go back in time they diverge more and more, and there is less to guide us. The Pliocene floras especially show us that innumerable species that are now exotic were indigenous probably down almost to glacial times, and their study sheds an immense light on the more problematical floras which preceded them.
Oberpliocän-Flora aus den Baugruben des Klärbeckens bei Niederrad und Schleuse bei Höchst a M.
T. Geyler F. Kinkelin. (Frankfort, 1887.)
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GARDNER, J. Our Book Shelf . Nature 36, 150 (1887). https://doi.org/10.1038/036150a0
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DOI: https://doi.org/10.1038/036150a0