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1A tiny fossil of an early juvenile Spinosaurus has been discovered by a duo of Italian paleontologists. The largest and the smallest specimens of Spinosaurus known to date. Image credit: D. Bonadonna. Spinosaurus (meaning ‘spine lizard’) was the longest, and among the largest of all known predatory dinosaurs, and possessed many adaptations for a semiaquatic lifestyle. It lived in what is now North Africa during the Cretaceous period, between 112 and 93.5 million years ago. The new specimen — the 21 mm-long pedal ungual phalanx (a phalanx supporting a claw of the foot) — is from the sma
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102请要当图片小编、语音小编或者小吧的在这儿报名(当上的就别回复了,自己留意一下) 格式: 申请人:xxx(用户名) 申请:xxx(按你想当的吧务填,如:小吧主) 申请原因:……+艾特吧主
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46本吧吧规,所有入吧人员必须查看,谢谢配合!此吧规为正式吧规,为1.0,以后会更新。更新一次后立即执行。谢谢大家!
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16第一部分,激龙的头骨的形状,嗅觉较强,可以良好的控制头部运动,口鼻部向下倾斜45°,Spinosauridae, a theropod group characterized by elongated snouts, conical teeth, enlarged forelimbs, and often elongated neural spines, show evidence for semiaquatic adaptations and piscivory. It is currently debated if these animals represent terrestrial carnivores with adaptations for a piscivorous diet, or if they largely lived and foraged in aquatic habitats. The holotype of Irritator challengeri, a nearly complete skull from the late Early Cretaceous Santana Formation
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11白垩纪中,有棘龙捕鱼为业。缘溪行,忘路之远近,忽逢针叶林,夹岸数百步,中无杂树,芳草鲜美,落英缤纷。棘龙甚异之。复前行,欲穷其林。 林尽水源,便得一山,山有小口,仿佛若有光。便上岸,从口入,初极狭,才通龙。复行数十步,豁然开朗。土地平旷,洞穴俨然,有蜥脚鸟臀素食之属。阡陌交通,异龙相闻,其中往来捕食,公母鳞羽,悉如外龙,黄发垂髫,并恰然自乐。 见棘龙,乃大惊,问所从来,具答之,便要还家,设酒杀鸭嘴作食。村中闻有龙
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328棘龙四足着地怎么了?捕鱼又怎么了?说棘龙是四脚蛇的暴龙吹们,敢不敢试想一下让暴龙抓一辈子帆锯鳐?还有那些棘龙黑们,说棘龙退化,赶紧翻物种起源去啊!达尔文老爷子写的明明白白,适应环境即是进化,你们都在古生物圈子里混,还不如学前班?棘龙在北非安安分分地捕鱼,劈头盖脸让你骂一顿,你们有良心吗?
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67以后每一次处理都会汇集到这个帖子里,非吧务类的回帖楼层将予删除。
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5进此帐的人,明确表示,棘龙吧不欢迎,一个字,滚
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22自古一楼不说话
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18此规定会在棘龙吧从冷水型过渡到多元协调型时由新规定替代。
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64个人觉得首先要排除埃及龙,它和潮汐龙竞争肯定处于劣势,数量估计不会太多,潮汐龙幼体。我觉得这个不可能是主食,只能说占一些比例,小潮汐龙不可能
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26相信全部看过了都~~ 慢慢更新
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22其中一根棘等于一个人的高度,而且有更长的不是没有可能,而且这只是12米棘龙的长度,18米棘龙的棘有多高…… 要是像野牛那样 增加前肢力量?? 代价
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401楼喂 Oxalaia quilombensis 前一阵子发现有人对南美棘龙属感兴趣,今天正好有空,发下我原来收集的资料,不过英文盲又该杯具了(个人其实看起来也挺费
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1181楼喂IPHG 1912 VIII 19 文章信息 Presented on November 6, 1915 Munich 1915 A publication of the Royal Bavarian Academy of Science in commissi
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451楼喂百度
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14有长而细的口鼻部,布满小而锐利的圆锥状牙齿 眼眶在头颅的前方,头颅后部则是球根状膨胀 白垩纪晚期北美洲乃至达科塔、怀俄
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