What remains is distorted after partially rotting on the floors of the ancient oceans. That makes them an extremely cold case for scientists studying our many-times great grandparents.

残存的部分由于在远古海洋层中发生部分腐烂，其信息也被扭曲了。这使得它们成为了科学家在研究人类数代以前祖先中的一个极端悬案。