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7000万年前的骨头还“活”着北卡罗来纳州立大学的古生物助理教授玛丽·施魏策尔宣称,已经成功从距今7000万年前的霸王龙腿骨化石中分离出“软组织”。被分离出的软组织不仅几乎是“完好无损的”——仍旧透明和具有柔韧性,而且显微镜下看起来像血管和细胞的内部结构仍旧存在。同样,施魏策尔在至少三个其他保存完好的恐龙样本里进行同样的分离实验。一个是8000万年前的鸭嘴龙、两个是6500万年前恐龙。结果她发现这三个恐龙化石中同样保存着血管、像细胞的结构、类似骨胶原质的柔韧物质。
The bones of 70 million years ago still “live” Mary Schweitzer, an assistant professor of paleontology at North Carolina State University, and declared that it has successfully separated the “soft tissue” from the fossils of the Tyrannosaurus thigh bone 70 million years ago. Not only is the isolated soft tissue almost “undamaged” - it is still transparent and flexible, and the internal structure of the microscope looks like blood vessels and cells still exist. Similarly, Schweitzer performed the same separation experiments in at least three other well-preserved dinosaur samples. One is a billard dragon 80 million years ago, and the other is a dinosaur 65 million years ago. As a result, she discovered that these three dinosaur fossils also preserved blood vessels, cell-like structures, and collagen-like soft materials.