Re: Life: Turn it upside down!

  Ernest Major wrote:

A quick search informs me that norovirus can survive on surfaces for weeks. Elsewhere, concern has been expressed at ancient pathogens, including viruses, being released by melting permafrost, so some people would seem to think that survival for thousands of years is possible.

There are claims for life surviving dormant for up to a quarter of
a billion years. Though this is not entirely accepted, there's not
an over abundance of counter claims, and bacteria north of 100k
years in age is considered established.
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https://jtem.tumblr.com/tagged/The%20Book%20of%20JTEM/page/5