Results 11 to 20 of about 321 (175)
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
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
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
Seaward‐Dipping Reflector Influence on Seafloor Magnetostratigraphy—A Pelotas Basin View
Geophysical Research Letters, Volume 49, Issue 23, 16 December 2022., 2022 Abstract Previous works used marine magnetic survey data and interpreted magnetic anomalies related to seaward‐dipping reflectors (SDRs) as oceanic crust or SDR age constraints in the South Atlantic Ocean. However, we advise against using SDR‐related magnetic anomalies to constrain ages because of the mostly low‐dipping geometry causing the overlapping
Henrique Serratt +6 more
wiley +1 more source
Obesity Reviews, Volume 22, Issue S5, Octubre 2021., 2021 Resumen Aunque se han hecho avances en el desarrollo y aplicación a gran escala de intervenciones eficaces contra la obesidad infantil, los retos siguen siendo importantes. Nuestro objetivo era comprender las causas del éxito de Estados Unidos y los países latinoamericanos en la implementación de políticas y programas (PYP) contra la obesidad e ...
Rafael Pérez‐Escamilla +6 more
wiley +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
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
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
Diversity of the Vendian fossils of Podillia (Western Ukraine)
Geo&Bio, 2020 Diversity ofVendian fossil associations is a common feature. The diversity depends on many factors: firstly, physical conditions in the basin, in which animals lived (i.e.
Volodymyr Grytsenko
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Геодинамика и тектонофизика, 2023 Studies have been made of the carbon and strontium isotope composition in carbonate sediments of the Khorbusuonka group and Kessyusa formation corresponding to the Upper Vendian in deep Khastakhskaya-930 and Burskaya-341-0 boreholes at the northeastern ...
B. B. Kochnev +2 more
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