The cretaceous period began 145.0 million years ago and
ended 66 million years ago. It followed the Jurassic period. It was a part of the
last of the three periods of the Mesozoic Era. the Cretaceous is the longest
period of the Phanerozoic Eon studied. From what we know in history Spanning 79
million years, it represents more time than has elapsed since the extinction of
the dinosaurs, which occurred at the end of the period. The trex was apart of
this time. The climate was always hot or warm they had plenty of food and lots
of daylight
