"'Two billion years in the making' trumpeted the ads for this fabulous Technicolor treat from Irwin Allen. The Animal World investigates the wonders of an astonishing array of creatures from butterflies to whales. But the unquestion highlight is a 1 minute stop-motion re-creation of prehistoric life, featuring an adorable baby brontosaurus, a terrifying death match between a stegosaurus and a ceratosaurus and a host of unfortunate dinosaurs trapped by molten lave."--Container.