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南非出土2亿年前“Ledumahadi mafube”化石 证属两足恐龙进化物种神秘的地球uux.cn报道)早期恐龙均为两足动物,仅使用两条后腿行走 ,并用前肢觅食,其后随着体形愈长愈大,逐渐进化成四足http://img1.wywyx.com/uploads/allimg/220514/11-220514091408.jpg|http://img1.wywyx.com/uploads/allimg...
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