(Problem and Solution) The Titanoboa caused many problems in those 2 million years ago. The monster snake would consume anything it could. It would even eat large alligators (Not the deinosuchus.) But this snake's large appetite caused population decrease. But that meteor hit earth, and the entire species was wiped out. This made reproduction much faster in those ancient times. Populations got back on their feet.
(Sequence) Many animals lived and died in similar time periods. Animals like the terror birds or Titanoboa lived during the cretaceous period (When that giant meteor hit earth 2 million years ago). While some died out in later years. The Megalania went extinct only 50000 years ago. Some extinct animals went out sooner. The Megalodon disappeared about 23 million years ago! Lucky us, we live in this era with no animals as dangerous as them!
Now some of the extinct animals have similarities. The dinohyus and Megalania definitely did not get food from being stealthy. They also lived on lands humans had not yet inhabited.
Now these animals have differences too. They both lived in totally different time periods. They lived millions of years apart. They lived across the world from each other too.