Don'ts.
Don't go for JUST saurus, just ask dripping d how good a giant is against them.( his giant stuffed my heroe and champian in a sack) then mushed about 5 more of the unit).
Don't go for JUST skinks either there shooting is good, with poisened attacks but weaponskill 2 and toughness2 are pretty useless.
Do's
What you really need is a couple of units of skinks for shooting support, a unit of kroxigors for taking out big or tough units (3 strenght 7 attacks), some saurus for general mushing, any of the following are good if used wisely and correctly, combat general, scouting shooter, or magician.
Very big Do... And no army is complete without the almighty, bonecrushingly good STEGADON!!! These are immensely powerfull, the howdah (wooden shack) gives the skinks a 2+ armour (on a skink), they inflict d6+1 impact hits, immune to phsycollgy, cause terror and best of all its got a giant bow on its back which counts as a bolt-thrower (1 str5 shot). awesome or what!!!
please comment on how you would use them and how you would beat them(if you could). B)