CNN Anderson Cooper 360 December 12, 2014 01:50:00
By fours. i got up there with all these materials and took me over to this big cliff and he said, take a look. i looked at it and looked at him and said, is that t-rex? he said, yes. and i think it's all here. >> joining me are peter larson, the paleontologist who found the t-rex and ex-wife, kristin donin. they wrote a book about the experience. peter, it's been 20 years since that moment. but it's still got to be emotional to see that. >> it was truly the high point of my life being part of that team that dug up this wonderful dinosaur. it's the biggest, best most complete t-rex that's been ...