九龙棘蛙 Paa jiulongensis
棘龙 Spinosaurus ; Edaphosaurus ; Saurolophus
高棘龙 Acrocanthosaurus ; Acrocould likehosaurus
顶棘龙 Altispinax
棘龙科 Spinosauridae ; Spinosaur
梳棘龙 Ctenosauriscus
中棘龙科 Metriacanthosauridae
棘甲龙 Acanthopholis ; Acanthopholis horridus ; Acould likehopholis
棘椎龙 Spinostropheus
比克尔斯棘龙 Becklespinax
棘龙的牙齿和霸王龙的牙齿完全不同。
Spinosaurus teeth and tyrannosaurus teeth were completely different.
对于棘龙来说，饮食只是进化的冰山一角。
As for spinosaurus, diet was just the tip of the evolutionary iceberg.
57英尺长，9吨重，棘龙在大约1亿年前的白垩纪早期就开始四处活动。
Fifty-seven feet long and up to nine tons, spinosaurus started poking his head around the early Cretaceous some 100 million years ago.
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