Updated list for the dinosaurs.
Lowlands Horn Face - This lightweight hails all the way from China. He's the only ceratopsian from that region. He's a tiny relative of Triceratops, but where triceratops weighs in excess of 12 tons, this lightweight weighs only 50 kilos. He's the skill monkey, and has bonuses to most non combat skills.
Utah's Predator - The hunter of the lot. Has bonuses to combat and hunting skills. This ferocious predator is like the big brother of those raptors in Jurassic Park, and he's bigger, smarter, stronger, more evil, and is covered in feathers. Good luck if you're at war with this civ - this guy is ready for ambush.
Moderate Spined Lizard - This big lug is about twice the size of the Utah's Predator. He's a big lug of a beast. Big warrior. He's getting buffs to most combat skills, except dodging - he's too big to dodge an attack effectively. But boy can this boy bite.
Different Lizard - This guy is like a smaller version of Tyrannosaurus rex. He's your royal. He's magic through sheer magicness (frankly couldn't be bothered trying to make a reason why). He weighs three tons. Almost as large as a sacred buffalo.
That's the civ.
Additional creatures I'm going to make.
Tyrannosaurus rex. 9 ton megabeast.
Triceratops. 15 ton megabeast. Try beating four graspers.
Giganotosaurus. 10 ton megabeasts. With any luck, I'll be able to include one of its typical behaviours - pack hunting.