Some of the EA dinos are happy on the coast! I've already made a rex and trike coastal habitat and they were happy.

Yeah, I've heard some of them are happy in coastal just as long as you put a misty spring.

You don't even need the misty spring for the Triceratops...not sure about the rex though...

I don't seem to understand why the t-rex and trike are in completely different biomes when the triceratops was apparantly a major prey for the trex. It just seems weird is all. I like to use modern day animals in the same exhibit with extinct animals (sivatherium with zebras, mastodons and woolly rhinos with bison). It creates a pretty cool exhibit. Also if you want to make your tundra exhibits better for your ice age animals, you could put boreal trees in tundra exhibits (also putting snow as a ground covering in your boreal ice age exhibits looks really nice too).

Yeah, the Carnotaurus didn't live in boreal forest! I normally put them in scrub then hide a glacier in a ditch behind some mountains.