CREATION BY EVOLUTION
the time in which the flowering plants first appeared, when the transformation was made from a Jurassic to an Upper Cretaceous and essentially modern flora. In the varying
_p168_recent_Japanese_cycads.png)
Fig. 9.—Recent Japanese cycads, showing the character of the vegetation in Jurassic time. (After Wieland.)
proportions of its main types of plants, the Lower Cretaceous flora discloses local differences of soil, altitude, humidity, and precipitation. The dominant late Jurassic types—the ferns, cycads, and conifers—continued without
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