A worm has been revived after 46,000 years in the Siberian permafrost
https://edition.cnn.com/2023/07/28/world/worm-resurrected-frozen-siberian-permafrost-intl-scli-scn/index.html
What we should pay attention to about this finding is that there can be reviving virus which is attached to the worm when thawing.
Researchers should treat such kind of virus carefully.