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一种有着鳄鱼般大嘴的巨型恐龙将与之相形见绌的暴龙挤到了第三位,成为地球上有史以来最大的肉食动物。新发现的棘背龙遗骨化石表明,这种恐龙从鼻子到尾部长约56英尺,重约8吨。这种凶猛的巨兽生活在1亿年前的白垩纪,出没于撒哈拉的沼泽和泥泞的河岸边。化石证据表明,它的主食是鱼
A giant dinosaur with a crocodile-like mouth drove the tyrannosaurus with a dwarf figure to third place and became the largest carnivorous animal ever on Earth. The newly discovered spinosaurus fossil shows that this dinosaur is about 56 feet long and weighs about 8 tons from nose to tail. This ferocious beast lived in the Cretaceous period 100 million years ago and was found on the swamps and muddy river banks of the Sahara. Fossil evidence shows that its staple food is fish