畅玩棋牌游戏下载

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                      1.  畅玩棋牌游戏下载 >> 科学传播 >> 科普动态

                      科普动态

                      【中国科学报】牙齿演化或助鸟类躲过大灭绝

                      发表日期:2020-04-27来源:放大 缩小

                        近日,《BMC进化生物学》刊发中国科学院古脊椎动物与古人类研究所李志恒团队、山东天宇自然博物馆等多家单位最新成果,指出与恐龙的食性差异可能是鸟类躲过大灭绝而幸存至今的关键。 

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                        团队解决的第一个问题是,首先在结构上,确定了牙齿釉质层在鸟类化石中的广泛存在。 

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