三角龙是白垩纪后期（67-65 mya, mya=百万年前）数量众多且十分著名的草食恐龙，体型强而有力，约九米长，四米高，五至六吨重，它和暴龙在同一时期，生存于现今的北美大陆，当遭遇暴龙，三角龙就以自己强壮结实的体格与尖锐的三角来进行决斗
三角龙的生活年化
三角龙生活在距今约6800万年前到6500万年前。三角龙是最晚出现的恐龙之一，经常被作为晚白垩纪的代表化石。目前已有两个有效种：褶皱三角龙、究竟三角龙，但还有其他属被命名。三角龙也是最著名的恐龙之一，也是在通俗文化中非常受欢迎的恐龙。
三角龙的生活习性英文和翻译
triceratops are herbivorous animal, because their heads low, they may be mainly take low height vegetation for food, but they may also use their head, beak and body to hit higher vegetation for food. the jaw at the front of the triceratops has beak long, narrow, are considered more suitable for grasping, pulling, and non occlusion. triceratops teeth arranged in tooth system, and each column from 36 to 40 teeth group formed, the jaw on both sides have 3 to 5 rows of teeth group, number of teeth teeth group in accordance with animal size change. triceratops has a total of 432 to 800 teeth, of which only a small part is used, and the triceratops teeth are constantly growing and replace. these teeth with vertical or near vertical direction to cut food. the many teeth triceratops, display them in bulky fiber plants for food, which may contain palm and cycad, and other personnel that contains ferns on the grassland.
三角龙是草食性动物，因为它们的头部低矮，所以它们可能主要以低高度植被为食，但它们也可能使用头角、喙状嘴、以身体来撞倒较高的植被来食用。三角龙的颚部前端具有长、狭窄的喙状嘴，被认为较适合抓取、拉扯，而非咬合。三角龙的牙齿排列成齿系每列由36到40个牙齿群所构成，上下颚两侧各有3到5列牙齿群，牙齿群的牙齿数量依照动物体型而改变。三角龙总共拥有432到 800颗牙齿，其中只有少部分正在使用，而三角龙的牙齿是不断地生长并取代。这些牙齿以垂直或接近垂直的方向来切割食物。三角龙的众多牙齿，显示它们以体积大的有纤维植物为食，其中可能包含棕榈科与苏铁，而其他人员则认为包含草原上的蕨类。
