... of the Siberian Platform contain two distinctive types of microstructure that enable us to address such issues. Preserved microstructures in Baicalia lacera and Tungussia confusa from lower Neoproterozoic (lower Upper Riphean) platform carbonates of several widely separated regions clearly reflect the biology...

...., Tungussia confusa , and Baicalia rara in each of them are valid. They were identified by V.Yu. Shenfil’, who believes that they permit the above-mentioned carbonate formations to be related to the Tungusik (Lakhanda) Horizon of the Upper Riphean. This conclusion is shared by the authors who compared...

... and, in the western sections, periodically near storm wave base. The basal part of the Shorikha Formation is characterized by the columnar stromatolites Baicalia lacera, Tungussia confusa, and Inzeria confragosa ; upper strata of the lower member contain the columnar forms Minjaria uralica, Katavia karatavica...