The skulls on posts -- it's hard to tell from these pictures, but they're actually very large fiberglass models, about 15 feet high. Las Vegas style. They're only a few feet in front of the Triceratops, but they have this "forced-perspective" effect that's really cool.

Some animal lovers have questioned the floating of the Triceratops, but it's to keep it from stepping on "Bob's" toes if "Bob" happens to come around. It seems to get around just fine, sort of "skating" rather gracefully for such a large animal.