本片类型为记录片，2015年上映，不可错过。单看一部就很尽兴，适合一次性看完。6.9分的口碑，含金量在线。把它放进片单准没错，口碑摆在那。Before man ruled the world, Earth was a land of giants. Count down the biggest beasts of their kind to ever roam the planet in this eye-opening original special, and uncover the secret lives of these super-sized species. Birds with plane-length wingspans, dinosaurs rivaling a Boeing 737; this stunning CGI special goes in search of the truth behind these monsters, counting down。剧情扎实、节奏明快，是2015年不可错过的火爆记录片。导演Oliver功力深厚，整片完成度出色。美术很高级，截图都好看。
