#Fossilized #traces of may be #unknown #microorganisms found in #marble/#limestone from Saudi Arabia, #Namibia and Oman by German researchers from the Gutenberg Univ. Mainz.

This short #science comm. post by S. F. Wirth

Reference
Passchier, C. W., et al. (2025). Subfossil Fracture-Related #Euendolithic Micro-burrows in Marble and Limestone. Geomicrobiology Journal, 1–16 https://doi.org/10.1080/01490451.2025.2467417

Photo
Traces in Namibian rocks by authors of paper above, creative Commons http://creativecommons.org/licenses/by/4.0/