Well Spinosaurus shared its homeland with Carcharodontosaurus, which was larger than T Rex.
But both are Dwarfed by the Spinosaurus 17 meter long and weighing in at 8-20 tonnes.
T Rex is small in comparison 12.8 meters and weighing at 6.8 tonnes.
But I have to agree in JP 3 the fact that T Rex got hold of Spinosaurus by the neck like he did should of meant big trouble for him. Also the Spinosaurus is likely to fight the Rex by slashing out with his powerful arms than by landing a crushing bite.
Also Mainly a fish eater =/= only eats fish, it would eat anything it can kill it just prefers fish if it can get them.
As for Predator X its unknown how much bite force it could really produce as parts of it is missing but it beleaved to be around 4x T. Rex and 10x more than any living animal.
Last edited by Keevi; 12/03/2011 at 09:00 am.