Results 1 to 10 of about 3,951 (214)
Dendrogramma, new genus, with two new non-bilaterian species from the marine bathyal of southeastern Australia (Animalia, Metazoa incertae sedis)--with similarities to some medusoids from the Precambrian Ediacara. [PDF]
PLoS One, 2014 This study examines a new species of dinosaur named Dendrogramma, which has been found near Bass Strait. Abstract A new genus, Dendrogramma, with two new species of multicellular, non-bilaterian, mesogleal animals with some bilateral aspects, D ...
Just J +3 more
europepmc +5 more sources
Developmental principles: fact or fiction. [PDF]
ScientificWorldJournal, 2012 While still at school, most of us are deeply impressed by the underlying principles that so beautifully explain why the chemical elements are ordered as they are in the periodic table, and may wonder, with the theoretician Brian Goodwin, “whether there might be equally powerful principles that account for the awe-inspiring diversity of body forms in ...
Durston AJ.
europepmc +2 more sources
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
New palaeomagnetic result from Vendian red sediments in Cisbaikalia and the problem of the relationship of Siberia and Laurentia in the Vendian [PDF]
Geophysical Journal International, 2000 A palaeomagnetic study of Vendian red sediments from the Lena River section on the western margin of Lake Baikal in the region of Cisbaikalia (54°N, 108°E) has isolated a stable remanence with direction D = 296.3°, I = −27.7° (high-temperature component) and a corresponding pole of 2.7°S, 168.2°E.
S. A. Pisarevsky +2 more
exaly +2 more sources
The origin of barium in the Cambrian–Vendian aquifer system, North Estonia [PDF]
Estonian Journal of Earth Sciences, 2009 Identification of the barium occurrence and its origin is made on the basis of the groundwater chemistry study. High Ba content has been detected in the Cambrian–Vendian aquifer system in the coastal vicinity of the Gulf of Finland in Estonia and St ...
Mokrik, Robert +3 more
doaj +2 more sources
The astronomical pulse of global extinction events. [PDF]
ScientificWorldJournal, 2006 The linkage between astronomical cycles and the periodicity of mass extinctions is reviewed and discussed. In particular, the apparent 26 million year cycle of global extinctions may be related to the motion of the solar system around the galaxy, especially perpendicular to the galactic plane.
Lewis DF, Dorne JL.
europepmc +2 more sources
Papers in Palaeontology, Volume 9, Issue 6, November/December 2023., 2023 Abstract Fine‐grained, siliciclastic units of the >1642 ± 3.9 Ma late Palaeoproterozoic Limbunya Group, Birrindudu Basin host rich, well‐preserved organic‐walled microfossil assemblages that include members of total‐group eukaryotes. These assemblages include taxa characteristic of this interval such as Tappania plana and Satka favosa, as well as less ...
Leigh Anne Riedman +4 more
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
Ediacaran–Cambrian bioturbation did not extensively oxygenate sediments in shallow marine ecosystems
Geobiology, Volume 21, Issue 4, Page 435-453, July 2023., 2023 Abstract The radiation of bioturbation during the Ediacaran–Cambrian transition has long been hypothesized to have oxygenated sediments, triggering an expansion of the habitable benthic zone and promoting increased infaunal tiering in early Paleozoic benthic communities.
Alison T. Cribb +4 more
wiley +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