here's a re-post of my off-topic post from bird evolution.
The crane is irrelevant because it is supported by cables anchored at a point substantially higher than the body of the crane itself, and no animal has a neck which is built like that.
i'd like to add this picture, which is the aforementioned barosaurus/allosaurus display at the american museum of natural history.
i'd like to point out that not only does this dinosaur hold the current record for longest neck, but this particular skeleton also holds the record for tallest free-standing dinosaur skeleton.
that's right, no cables.