Changes

According to science, a period in time in earth's history dated from 251 million years ago to 199 million years ago.  After the [[Permian]] and before the [[Jurassic]] period.  The super continent [[Pangea]] supposedly started to break up during this period.

A period in time after the [[Permian]] and before the [[Jurassic]] period.  The super continent [[Pangea]] supposedly started to break up during this period.

This period saw the emergence of the [[pterosaur]].

This period saw the emergence of the [[pterosaur]].