Biotic response to mass extinction: the lowermost Triassic microbialites.

During the first step of the very rapid and large scale lowest Triassic transgression , we note in different areas (S Alps, Taurus,Turkey, S Armenia, E Elburz, Iran, Central Iran and Central Afghanistan) the growth of domal stromatolites, thrombolites and other microbial structures. At the dawn of Triassic time, the carbonate factory was dominated by non-skeletal species and by microrganisms able to precipitate carbonate

Basal Triassic carbonate of the Tethys: a microbialite world

Following the end of Permian mass extinction, primitive groups of microbial communities emerged from stressed palaeoenvironments to recolonize the normal marine area of the Tethys. The prolific upper Paleozoic skeletal carbonate factory was abruptly replaced by a nonskeletal carbonate factor