Because that's the theme that all sensible 30 and 40 year-olds want for their birthday, right? Where did the dinosaurs come into it? check out the Jurassic croquembouche. I'm pretty certain that the last photo wasn't taken by me, but probably by edm.
There's a close-up of the croquembouche on the dreamstress' blog, along with, and this surprises me, a picture of me flipping the bird in a most unfairylike manner.