No It isn't in a dinosaur but it is a dinosaur experience. While their website says T-Rex Cafe, most people refer to it as simply T-REX. I wasn't prepared when I walked into this cavernous building which houses a cafe area, with prehistoric themed dining areas as well as exploration experiences in the Paleo Zone. Unearth the past in the area called Discovery Dig or pan for precious stones or gold in Discovry Creek. You can build your own Dino in an area called Build A Dino, by Build a Bear stores. Plan a party there or hold a corporate event. It's all available.
Once your children get there they won't want to leave.
Educational tours are available and can be arranged by calling 913-334-8888
You may find the food a little pricey. One look at the menu told me I wasn't going to eat there, but the experience of just going there is well worth the trip. T-REX is in the Legends mall at The Legends of Village West located at I-435 and Parellel Parkway West (just north of I-70) and is a quick drive from Kansas City. There is a parking ramp for the mall that is free of charge
Check out all that T-REX has to offer at this site.