![Jurassic world spinosaurus skeleton](https://cdn-ak.f.st-hatena.com/images/fotolife/g/greathigh-power/20200126/20200126193909.jpg)
Everything in Tyrannosaurus Rex is designed Tyrannosaurus rex (T. rex lived 65 million years ago and allosaurus 145 million years ago.
![jurassic world spinosaurus skeleton jurassic world spinosaurus skeleton](https://cdn.theatlantic.com/thumbor/lI7EqVqhqoTe4aIvcIU96LMLqck=/460x55:3500x2335/1200x900/media/img/mt/2016/03/RTS8PJU/original.jpg)
It is estimated to have been around 30cm (12in) long when including the root.
![jurassic world spinosaurus skeleton jurassic world spinosaurus skeleton](https://www.nhm.ac.uk/content/dam/nhmwww/discover/baryonyx/baryonyx-dinosaurs-gallery-v2-full-width.jpg)
Can you imagine if Tyrannosaurus Rex still roamed the Earth today? Based on fossil specimens, scientists have determined that a Tyrannosaurus rex could be up to 40 feet long and 12 feet high.
![Jurassic world spinosaurus skeleton](https://cdn-ak.f.st-hatena.com/images/fotolife/g/greathigh-power/20200126/20200126193909.jpg)