New vestiges of the first life on Earth discovered
phys.org
phys.org
Having genetic similarity to other organisms would be a good clue that it's not some separate parallel biogenesis.
Of course, another way to look at it is that they both did arise the same way... From a parent even older. :p
* https://impacts.to/downloads/lowres/impacts.pdf
There's a timeline showing approximately when stromatolites make an appearance, relative to the start of the Universe.
But a well-designed drone trained to visually recognize candidates would be a great service, and would minimize environmental disruption. Some enterprising (resume-builder) could directly contact the researcher in question...