Check these sculpts out, might make for some interesting conversions. http://cart.blackorc.com/index.php?main_page=index&cPath=69 Like the Spinosaurus might make a decent Carnasaur...
I'm not crazy about the Lizards, but I've been looking all over for jaguars to replace the wolves in my jungle-themed goblin army. The Outkast cheetas should work perfectly. They also have some nice alternatives for my son's Beastmen army. Thanks for posting the link.
I said they where interesting, never said they where great. I posted them because there are so few alternatives to gw's lizards.