Arumberiamorph structure in modern microbial mats: implications for Ediacaran palaeobiologyAnton V. Kolesnikov, Taniel Danelian, Maxime Gommeaux, Andrey V. Maslov and Dmitriy V. GrazhdankinBull. Soc. géol. Fr., 188 1-2 (2017) 5DOI: https://doi.org/10.1051/bsgf/2017006