The extinction event that closed the Triassic Period has recently been more accurately dated, but as with most older geologic periods, the rock beds that define the start and end are well identified, but the exact dates of the start and end of the period are uncertain by a few million years.During the Triassic, both marine and continental life show an adaptive radiation beginning from the starkly impoverished biosphere that followed the Permian-Triassic extinction.. 
Ile-iwe alákọ̀ọ́bẹ̀rẹ̀ ti St Anne ní ìlú Ìbàdàn ni ó lò fún ẹ̀kọ́ girama rẹ̀.. 