Hi!
Threehorn found some rather interesting images on a webpage on the land before time 11 (funnily enough a German webpage). There are four images each of which are supposed to be scenes from the movie, but none of them actually is.
Before I continue I will just post the pictures here so you know what I am talking about:



All of these pictures all have a funny look to them which makes me think that none of them was actually part of a produced scene of whatever kind. Maybe they were concepts for a background of a DvD menu or the like. I cannot be sure, but here are my points why I don't suppose they were actual scenes from a movie:
In picture number one and three we have postures we have scene elsewhere on images already. Cera in both of these pictures was shown in the very same posture (it is the very same posture that has just been mirrored and changed in color) elsewhere, though right now I can't say where exactly. Ducky in picture number three has been in this posture (among other) on the covers of the 8th and 9th movie (again mirorred). As for the second of these pictures Littlefoot and "Big Daddy" just look way to "clean" really very much as if they had been pasted in front of a background without any further attempts to make them look like they belonged there. There isn't even a shadow for "Big Daddy".
Now the fourth picture is somewhat different:

I'm positive I've seen this one on several webpages already but never paid too much attention to it. It is not a scene that was in the movie, but of all these pictures this one looks most like it had been cut from a movie scene. There is some kind of strange bluish reflection on all three characters, but that need not mean it is not from a completed scene. I tried to make sure about it by asking Cera's voice actor Anndi McAffee about it. Alas I fear it would have been too time consuming. Her response was curt:
I have no idea if they cut anything out of the movies. I don't keep the scripts and after 8 movies, I barely remember what they are about. Yes, I am continuing to voice Cera for the TV series. We started recording this week.
Sort of sad.
At least there is the good news that Cera's voice will remain the same in the movies to come.
As for that scene I reckon we can only speculate for the moment.