Sentences with phrase «within microbial mats»
Toward that end he pursued studies of small (meiofaunal) grazing animals living within microbial mats and documented the earliest appearance of animal and trace (so - called Ediacaran) fossils in late Precambrian sediments in NE Norway.
http://www.sciencemag.org/ Not exact matches
They produced oxygen by photosynthesis, and sometimes the oxygen got trapped as bubbles within sticky microbial mats.