Nothing’s more fun than coloring pages – especially if it’s a free dinosaur coloring page! Perfect for keeping your kids busy on a long rainy day. Allosaurus was a dinosaur that looked like a T Rex but lived 155 to 145 million years ago, while the T Rex lived 68 to 66 million years ago. These two never met! Just hit the download button or click the picture and download the PDF. Then, all you need to do is print it out, and the fun can begin.