Spider ID help

So found this spider outside today. I thought it was some kind of wolf spider but I know nothing about them. He's bigger than any I've seen if so. We live in colorado.

http://i847.photobucket.com/albums/a...D8E35C6480.jpg

http://i847.photobucket.com/albums/a...D8CF3CAD04.jpg

Idk if thats a wolf spider or not, our wolf spiders here in iowa make a .50 cent piece look small.

This does bear many markings of a wolf spider. I'm not an expert but I'd wager a guess at a burrowing wolf spider. I forget the exact species...either that or perhaps Hogna antelucana, but I don't know if that one lives in Colorado or not. The markings are difficult to judge. Post these photos to the website Spiders.us under "id request", they'll know much more!