Widespread development of microbialites harbors a series clues about microbial activity, environmental condition, and aquatic chemistry. The Ediacaran-Cambrian transition draws extensive attention on the co-evolution complex life Earth's environment but associated microorganism has been largely ignored. In this study, we present high-resolution database with respect to spatial temporal distribu...

Molecular clock data indicate that the first zygomycetous fungi occurred on Earth during the Precambrian, however, fossil evidence of these organisms has been slow to accumulate. In this paper, the fossil record of the zygomycetous fungi is compiled, with a focus on structurally preserved Carboniferous and Triassic fossils interpreted as zygosporangium-gametangia complexes and resembling those ...

I want to thank Prof. Rozanov for his review of the manuscript and these insightful comments. As Prof. Rozanov is well aware the field of Bacterial Paleontology is still young and not yet thoroughly understood in spite of the many very important contributions of paleontologists who have carefully studied the extensive assemblages of bacterial fossils that are found in Phanerozoic, Proterozoic, ...

Microvertebrate fossils are used in biochronology to determinate the age of geological layers with a high grade of accuracy, and in paleoecology to extract information about the past enviroment. Actual techniques used to extract microfossils are manual, and require of a high amount of time and human resources. This fact make interesting the study of other more complex techniques. The work prese...

Acritarchs are a group of organic-walled microfossils with unknown biological affinities. The wall ultrastructure of the unornamented, smooth Leiosphaeridia sp. and the acanthomorphic Gyalosphaeridium pulchrum from the Ediacaran Dey Dey Mudstone in the Officer Basin, South Australia, was studied by use of transmission and scanning electron microscopy, and transmitted light microscopy. The study...

Vase-shaped microfossils (VSMs) attributed to testate amoebae occur globally in diverse assemblages Tonian rocks. These have thus been considered a potential biostratigraphic tool, especially for the interval between 789 and 729 Ma. Here we report well-preserved situ VSM assemblage, including several taxa previously as Tonian, within glacially influenced deposits which sedimentological data sup...

Calcite microfossils are widely used to study climate and oceanography in Earth's geological past. Coccoliths, readily preserved calcite plates produced by a group of single-celled surface-ocean dwelling algae called coccolithophores, have formed a significant fraction of marine sediments since the Late Triassic. However, unlike the shells of foraminifera, their zooplankton counterparts, coccol...

Opaline phytoliths are important microfossils used for paleoecological and archaeological reconstructions that are primarily based on relative ratios of specific morphotypes. Recent studies have shown that phytolith assemblages are prone to post-depositional alteration involving partial dissolution, however, the manner in which partial dissolution affects morphotype composition is poorly unders...

A ca. 600 m thick siliciclastic succession in northern Russia contains abundant and diverse microfossils that document early to middle Ediacaran deposition along the northeastern margin of the East European Platform. The Vychegda Formation is poorly exposed but is well documented by a core drilled in the Timan trough region (Kel’tminskaya-1 borehole). Vychegda siliciclastics lie unconformably a...