1. Brachiosaurus
Late Jurassic Period

One of the largest land animals ever to live, Brachiosaurus lived in North America between 145 and 155 million years ago.  They are estimated to have been between 60-70 feet long and weighed anywhere from 30 to 50 tons!  This diorama shows the massive creature in a forest setting.  I made a video that describes how I made the diorama; it can be seen at https://youtu.be/qnfdAeXJepc

Tamiya #60106, Brachiosaurus