The second and third teeth on each side were noticeably larger than the rest of the teeth in the premaxilla, creating a space between them and the large teeth in the anterior maxilla;
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美
- 颅骨的构造类似重爪龙,牙齿相对比较少,棘龙可能有猎食鱼类的习性,甚至猎食其他恐龙。