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Irridinitus
Ediacaran fossils and dubiofossils, Miette Group of Mount Fitzwilliam area, British Columbia
Ediacaran remains from intertillite beds in northwestern Canada
Ediacaran fossils from the Miette Group, Rocky Mountains, British Columbia, Canada
Ediacaran body and trace fossils in Miette Group (Windermere Supergroup) near Salient Mountain, British Columbia, Canada Revision of the paper was carried out by Dr. Guy Narbonne following the passing away of both Hans Hofmann ( † deceased May 19, 2010) and Eric Mountjoy ( † deceased June 18, 2010) after manuscript submission.
Fossils and matgrounds from the Neoproterozoic Longmyndian Supergroup, Shropshire, UK
Patterns of distribution in the Ediacaran biotas: facies versus biogeography and evolution
The hierarchical structure of organisms: a scale and documentation of a trend in the maximum
The Paleoproterozoic megascopic Stirling biota
Following the logic behind biological interpretations of the Ediacaran biotas
The Neoproterozoic glacial formations of the North and Middle Urals
Abstract In the North and Middle Urals, four Neoproterozoic diamictite-dominating units are known: the Churochnaya, Tany and Koyva formations and Lower Starye Pechi Subformation. A glacial origin for the diamictites is indicated by a number of characteristic features such as erratic stones, striated and faceted clasts, shales with dropstones, preferential orientation of elongated stones, the wide distribution and confinement to certain stratigraphic levels of the deposits, and the association with distinct post-glacial dolostones. Most diamictites were deposited in a glaciomarine environment and sourced from an ice sheet on the East European craton. The Churochnaya Formation also contains subordinate terrestrial and probably seasonal sea ice deposits. This formation accumulated on a glaciated continental shelf, while the Tany, Koyva and Starye Pechi formations were deposited on the outer shelf and continental slope of the eastern margin of the East European Craton. The Middle Ural sections contain the White Sea (Ediacaran) Metazoa assemblage, typical late Neoproterozoic microfossils, stromatolite associations, and radiometric dates obtained from volcanic tuffs, granosyenites, trachytes and trachyandesites. The combined data suggest that the Lower Starye Pechi Subformation was deposited in the middle of the Ediacaran Period (Early Vendian). The Churochnaya Formation of the North Urals and the Tany and Koyva formations of the Middle Urals were likely deposited in the late Cryogenian period (Early Vendian).
Discoidal fossils of the Ediacaran biota: a review of current understanding
Abstract Discoidal fossils, despite being the oldest, youngest, and most common elements of the Ediacaran biota, have not received their fair share of attention. Taxonomy of discoidal fossils is currently dubious, and some forms have not been properly re-examined since the initial incorrect descriptions as medusae. Attachment discs of benthic stalked forms, which adhere to microbial mats at the sediment–water interface, are unequivocally present without stalks or other upper parts in most discoidal Ediacaran assemblages. However, many discoidal assemblages are likely to have represented a heterogeneous mixture of benthic discoidal organisms, including bacterial colonies, fungi, actinian-grade cnidarians, and perhaps poriferans. Such organisms probably account for the vast majority of fossils in the Fermeuse Formation of Newfoundland and similar assemblages from Norway, England, and Wales. Discs in the underlying complex Mistaken Point assemblages, however, likely mostly represent holdfasts. Other complex assemblages, such as those of South Australia and the White Sea of Russia, unequivocally contain more than one biological construction responsible for the discoidal structures, but holdfasts likely represent a significant proportion. The disc-dominated Fermeuse assemblages and the nearby rangeomorph-dominated Mistaken Point assemblages are unlikely to merely represent different taphonomic windows on identical communities, as previously suggested, but rather reflect environmental control on both biotic composition and taphonomy.