Results 131 to 140 of about 321 (175)
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ISOTOPIC GEOCHRONOLOGICAL SCALE OF VENDIAN AND PHANEROZOIC
Russian Geology and Geophysics, 1993Of 2354 datings published in 124 isotopic geochronological scales, 1146 “good” estimates were sampled statistically and used for estimating the beginning of ages and phases of the Phanerozoic and Vendian. The Cenomanian–Unnamed datings were corrected by the lithological method with the sedimentation quanta and sedimentation gaps taken into account. The
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Colonization of substrates: Vendian sedentary benthos
Paleontological Journal, 2010Studies of fossils sampled from a single fossiliferous layer (monotopic series) and a summary of previous data on taphonomy and morphology of Vendian macroorganisms suggest that most strategies of attachment of sedentary benthos were formed in the Vendian. These included: (1) free living with possible organic gluing; (2) fixation on the substrate using
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Discussion on was Scotland a Vendian RRR junction?
Journal of the Geological Society, 1995B. J. Bluck, T. J. Dempster & G. Rogers write: In a recent Special paper, Soper (1994) contends that Dalradian deposition continued after the emplacement of the Ben Vuirich granite at 590 Ma (Rogers et al. 1989). The granite, however, contains metasedimentary xenoliths with an
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Feeding traces of proarticulata—the Vendian metazoa
Paleontological Journal, 2011Three types of low-topography impressions are described from the Late Vendian, which are interpreted as the feeding traces of representatives of the phylum Proarticulata Fedonkin, 1985, which became extinct in the Precambrian. The producers of two types of trace were found.
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Vendian Faunas and the Early Evolution of Metazoa
1992Until recently, paleontological data were almost completely ignored by zoologists studying the origin of major groups of invertebrates and the early phylogeny of the Metazoa, chiefly because Charles Lyell had long ago emphasized the incompleteness of the geological and paleontological record.
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