Marine Endolithic Cyanobacteria - 3

Hyella stella Al-Thukair et Golubic, acid-extracted from a carbonate sand grain. Florida Keys, shallow subtidal. The organisms is quite similar to the ancient Eohyella dichotoma, which penetrated ooid sand grains of the late Proterozoic (see Marine Endolithic Cyanobacteria - 5)(Al-Thukair & Golubic 1991b). Photo: courtesy of Dr. K. Lukas.

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