That under-evolved animal suddenly finds itself in a new, infinitely more promising, environment; the coiled spring of evolution within it is released. And watch that vital elan, that Miocene exuberance with which Andrias hurls himself forward along the road of evolution! How feverishly he makes up for the hundreds of thousands and millions of years of evolution he has missed! Is it conceivable that he will content himself with the evolutionary stage he has reached today? Will the generic upsurge we have witnessed now exhaust itself - or is Andrias still only on the threshold of his evolution
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