na don't make it a fossil type, take the blue prints of the pre historic animals and draw from that therefore you can begin to build up a new look and haha you could give it a go dude, it's always good fun :D you rp'ed before??
I actually have no idea where you could post that really I only really use the rp boards and the other chat board not looked at the other boards xD but I have an idea, why not look at some of the designs from Avatar and use that for inspiration?? that as well as dinosaurs are always good and on wards, could always do one based of a saber-tooth :D
well from the sounds of it, it doesn't bare that much resemblance so i don;t think you run the risk of being a cookie cutter if you are worried, just brain storm characters you think would be cool and decide after awhile if you like one and the maps awesome dude clearly put a lot of work into this