If you have not seen the lecture on "Microfossils and Biomolecules" by Dr. R. B. Hoover, well worth it:
In it he shows SEM images with diatoms from inside CO type meteorites.
spiedigitallibrary.org/confere…
Microfossils and Biomolecules in Meteorites, R.B.Hoover
Richard Brice Hoover is a scientist who has authored/edited ~50 scientific books and over 350 research papers on X-Ray/EUV optics, Solar Physics, Astrophysic...YouTube
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