Magna Bones | Magna Saurs Building Sets By Mega Bloks From Mega Brands  Using bone-shaped rods, build and display these cool replica models. Discover the fossils of great dinosaurs and bring out the archeologist in you with Mega Bloks Mega Bones! Among the most impressive carnivores to ever live, Saber Tooth Tigers simply had to flash their teeth to scare predators away... Travel back in time and discover this fascinating creature. The Woolly Rhino's primary defense against predators was its two horns, which were also used as plows to push snow aside in order to get the vegetation beneath. Travel back in time and discover this fascinating creature.