Complex sentence: A 60 foot long and 20 foot tall Carcharodontosaurus from 70 Million BC, Big Red was accidentally sent into the present day and went on a rampage in Los Angeles until he was teleported back to his own time where he was trapped in a cliff and died.
Split into simpler sentences: A 60 foot long and 20 foot tall Carcharodontosaurus from 70 Million BC, Big Red was accidentally brought into the present day, going on a rampage through Los Angeles. He was eventually teleported back to his own time, where he was trapped in a cliff and died.