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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Sajan sarthak Best Answer
Here it is describing that the plants like conifers and cycads survived untill the climate and environment change . The new species are getting evolved as the environment was changing. rift valley means Continental breakof lead to a pressure on environment on choosing new species by natural selection.
sir one more word - the foliage of dicroidium was very fern like. wht is foliage means.
foliage means leaf