Brachiosaurus original model in trailer?

I saw something weird on the trailer I and You can see the Brachiosaurus has a different look. Look at the head and neck the head looks like it got decipitated. WTF Also it looks like ''Brontosaurus'' which is now Apatosaurus. Can somebody answer me what the hell happened in development?

The developers probably had some flaws in the development process and maybe they at first wanted the Brachs to look the way they did in the trailer

RaptorAttack3.0 wrote:The developers probably had some flaws in the development process and maybe they at first wanted the Brachs to look the way they did in the trailer

No I think it was supossed to have the structure on the sauropods that look like they have bendy necks and that was the result. I do not know how the hell that happened.

It's the PS2 version.