IcLeal DLshiiuiioiv of Genera; w Tima 



Jrorn,' uid£pa\d£nt widely separate* cerdres 

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 Kg £3 -*jj 



Miocene 



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Miocene 



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(rctaccous 

 Jurassic 



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Triassic 



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Termixxn/ 



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Carbojuferous 

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