Fossil bubble structure related to microbial activity coeval with the middle Ediacaran Oceanic Oxygenation Event in the Tandilia System . Lajsba [Internet]. 2022 Jan. 4 [cited 2025 May 22];28(2):101-20. Available from: https://lajsba.sedimentologia.org.ar/lajsba/article/view/28-2