Results 21 to 30 of about 2,587 (213)
Stratigraphy and geological correlation, 2022 The carbonaceous macrofossils which belong to multicellular algae and which were previously known from the younger (>570 Ma) Miaohe biota are found for the first time in the Lower Vendian (Middle Ediacaran, ~580 Ma) rocks of the Ura Formation of the ...
P. Petrov, N. G. Vorob’eva
semanticscholar +1 more source
The ‘classic stromatolite’ Cryptozoön is a keratose sponge‐microbial consortium
Geobiology, Volume 19, Issue 2, Page 189-198, March 2021., 2021 Abstract Animal evolution transformed microbial mat development. Canonically inferred negative effects include grazing, disturbance and competition for space. In contrast, ancient examples of cooperation between microbial mats and invertebrates have rarely been reported.
Jeong‐Hyun Lee, Robert Riding
wiley +1 more source
Геодинамика и тектонофизика, 2021 We have studied terrigenous-carbonate rocks in the area near the Sayan mountains in the Irkutsk Region (Russia), specifically at the Shaman Cliff, being the stratotype area of rocks that belong to the Moty group.
Z. L. Motova +2 more
doaj +1 more source
The continuing debate on deep molluscan phylogeny: evidence for Serialia (Mollusca, Monoplacophora + Polyplacophora). [PDF]
Biomed Res Int, 2013 Molluscs are a diverse animal phylum with a formidable fossil record. Although there is little doubt about the monophyly of the eight extant classes, relationships between these groups are controversial. We analysed a comprehensive multilocus molecular data set for molluscs, the first to include multiple species from all classes, including five ...
Stöger I +6 more
europepmc +2 more sources
Geologicheskii vestnik, 2022 The need to correct individual stratigraphic levels of the Regional Stratigraphic Scheme of the Upper Precambrian deposits of the Urals, existing since 1993, is due to the receipt of new data from lithological-stratigraphic, geotectonic and isotope ...
N. Sergeeva, V. Puchkov
semanticscholar +1 more source
Vendian of the Southern Urals: a review of research at the beginning of the 21st century
Lithosphere, 2022 Research subject. The author investigates sections of the Vendian stratigraphy in the West Bashkirian subzone, written for an Explanatory Note to sheet N-40 – Ufa of the State Geological Map 1000/3 of the Russian Federation, as well as the results ...
A. Maslov
semanticscholar +1 more source
Correlation of Proterozoic-Phanerozoic deep wells sections targeting Aldan-Maya area petroleum potentiality estimation [PDF]
Нефтегазовая геология: Теория и практика, 2022 The article discusses the debatable issues of well log correlation of the Riphean, Vendian, Cambrian and Mesozoic sections, promising for the search for oil and gas in the Aldan-Maya potentially petroleum bearing region. The author's proposed correlation
Fomin A.M. +3 more
doaj +1 more source
Литосфера, 2020 The object of research. At the top of the Upper Riphean-Vendian sedimentary sequence of the Bashkirian meganticlinorium (western and central parts of the named structure, corresponding to the stratotypical locality of Riphean) there is a series of fairly
А. V. Maslov
doaj +1 more source
Geofizicheskiy Zhurnal, 2022 In Earth’s geological evolution the Vendian is significant because: 1) it preceded the «Cambrian Evolutionary explosion» when the multicellular organisms became suddenly much more diverse; 2) it is associated with the global tectonic and palaeogeographic
V. Bakhmutov +4 more
semanticscholar +1 more source
Vendian of the Middle Urals: A review of some investigations in the beginning of the 21st century
Lithosphere, 2022 Research subject. The research objects included a book section on the Vendian stratigraphy of the Yazvinsko-Kosva sub-zone of the Kvarkush-Kamenogorsk meganticlinorium, written for the Explanatory note to sheet O-40 – Perm of the State Geological Map ...
A. Maslov
semanticscholar +1 more source