which one is better, the T rex from that fantasia segment or the T rex in land before time
It’s hard to compare and contrast them cause they are very similar, Land Before Time on the whole took a lot of influence from the segment. Both rexes and cartoons in whole give me a Charles R. Knight feel (who’s art almost certainly used by the Disney animators as refs)
As far as demonic red eyed tail dragging 20th century monster Tyrannosauruses go I’m more partial to Bluth’s. It’s deffinitly a nostalgia thing mostly, but it felt more horrifying to me as a kiddo, the Disney is just kindof a “scary animal” in a typical sense while the LBT one was more of an embodying the maliciousness of the world and beyond reason.