Dr Weston has done a lot of research on the origins and evolution of Gondwanan flora. The term Gondwanaland refers to the larger supercontinent which includes Antarctica, Australia, Africa, Arabia, South America, NZ and the Indian sub-continent. The enormous land mass was thought to have existed from about 800 million to about 20 million years ago. Botanists have discovered, that numerous plant groups have representative species, closely related, in the resulting land masses.
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