Why do Kron and Bruton (from Dinosaur) look different and are bigger than other Iguanodons in the movie?

Godzilla316
MemberBrachiosaurusJuly 18, 201615954 Views6 RepliesSince this was probably one of my favourite movies as a child, I always wondered why they were so much larger and different looking than the other Iguanodons? Anyone got any ideas?
Remember that chap, I forget his name, he climbed Everest without any oxygen, came down nearly dead. They asked him, they said, "Why did you go up there to die?"
He said, "I didn't, I went up there to live."