The Raptor's looking good so far!

*NERD MODE*
It's probably completely irrelevant, but "Brontosaurus" never existed, as it was erroneously named from the jumbled up bones of Camarasaurus and Apatosaurus, but I thought I'd point it out and make sure it's a conscious decision rather than an oversight.
*NERD MODE*

In any case, it's a fantasy mod so you can do what you like, and "Brontosaurus" is just such an awesome name.

Some ideas:

If you want to fill out the dino's unit roster, you might want to consider making "base" dinosaurs which can then be altered with some geometric changes.

For example, if you make a base Carnosaur (8 feet tall, 25 feet long or so), you can then make a few more with small changes:

Megalosaurus (base carnosaur)
Ceratosaurus (add a horn)
Carnotaurus (Shorten the arms and head, add horns)
Dilophosaurus (Double crest, make it more slender)
Cryolophosaurus (add the cool comb crest)

Change the skin colour/patterns, and voila, you have a lot of variety from just one model!

If you do something like this, you could even take normally very similar creatures and give them different colours and change their stats to make new beasties:

Saurophaganax/Mapusaurus/Carcharodontosaurus/Giganotosaurus/Tyrannotitan

Or just take one of the originals and scale it up/down accordingly:

Brontosaurus/Cetiosaurus/Seismosaurus/Supersaurus/Amphicoelias(if you're feeling particularly adventurous.

Good luck, and have fun!