Gills had been bsp;out altogether, and the gill slits only appeared as an embryonibsp;pha.
The new creatures without a tadpole stage were the Reptiles.
currently there had been a development of ed-bearing trees, whibsp;could spread their ed, indepely of s or lakes.
There were now palmlike cycads and many tropibsp;ifers, though as yet there were no fl plants and no grass.
There was a great number of ferns.
And there was now also an incread variety of incts.
There were beetles, though bees and butterflies had yet to e.
But all the fual forms of a new real land fauna and flora had been laid down during the vast ages of verity.
This new land life needed only the opportunity of favourable ditions to flourish and prevail.
Age by age and with abundant fluctuations that mitigation came.
The still incalculable movements of the earth’s crust, the ges in its orbit, the increa and diminution of the mutual ination of orbit and pole, worked together to produbsp;a great spell of widely diffud warm ditions.
Gills had been bsp;out altogether, and the gill slits only appeared as an embryonibsp;pha.
The new creatures without a tadpole stage were the Reptiles.
currently there had been a development of ed-bearing trees, whibsp;could spread their ed, indepely of s or lakes.
There were now palmlike cycads and many tropibsp;ifers, though as yet there were no fl plants and no grass.
There was a great number of ferns.
And there was now also an incread variety of incts.
There were beetles, though bees and butterflies had yet to e.
But all the fual forms of a new real land fauna and flora had been laid down during the vast ages of verity.
This new land life needed only the opportunity of favourable ditions to flourish and prevail.
Age by age and with abundant fluctuations that mitigation came.
The still incalculable movements of the earth’s crust, the ges in its orbit, the increa and diminution of the mutual ination of orbit and pole, worked together to produbsp;a great spell of widely diffud warm ditions.
The period lasted altogether, it is now suppod, upwards of two hundred million years.
It is called the Mesozoibsp;period, to distinguish it from the altogether vaster Pal?ozoibsp;and Azoibsp;periods (together fourteen hundred millions) that preceded it, and from the ozoibsp;or new life period that intervened between its bsp;and the prent time, and it is also called the Age of Reptiles bebsp;of the astonishing predominanbsp;and variety of this form of life.