Palaeontology, Volume 67, Issue 5, September/October 2024.Abstract Aggregated clusters of acritarchs are relatively common among assemblages of organic‐walled microfossils, yet such associations have received relatively little attention. Here we report a new diversity of acritarch clusters from the early Cambrian Buen Formation of North Greenland.
Elise Wallet +2 more
wiley +2 more sources
Marcasite at the Permian‐Triassic Transition
Geophysical Monograph Series, Page 377-399., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Elena Lounejeva +7 more
wiley +1 more source
Acritarchs from the Duolbagáisá Formation (Cambrian Series 2–Miaolingian) on the Digermulen Peninsula, Finnmark, Arctic Norway: towards a high-resolution Cambrian chronostratigraphy [PDF]
, 2020 New information on acritarchs from the Duolbagáisá Formation, Digermulen Peninsula, Arctic Norway, enable recognition of the three Cambrian Series 2 acritarch-based zones: the Skiagia ornata–Fimbriaglomerella membranacea, Heliosphaeridium dissimilare ...
core +1 more source
The evolution of reproduction in Ediacaran-Cambrian metazoans. [PDF]
Biol Rev Camb Philos SocABSTRACT The evolution of reproductive style is a fundamental aspect of metazoan life history but has not been explored holistically through the Ediacaran–Cambrian rise of metazoans. Recent molecular clock analyses based on only unequivocal metazoan fossil calibrations suggest that Porifera were present by at least 590 million years ago (Ma), all major
Wood RA, Droser ML.
europepmc +2 more sources
Acritarchs of Llandeilo and Caradoo age from classic localities in Britain. [PDF]
, 1979 The last two decades have seen the publication of a large number of papers dealing with Palaeozoic acritarchs including many devoted to the description of Ordovician assemblages.
Turner, Robert Eric
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, 1993 1. Acritarchs are a polyphyletic group of unicellular organisms, essentially marine and fossil, with a very resistant organic membrane; the majority probably represent the cysts of microscopic, extinct eukaryote algae. This review gives a general account
FRANCINE MARTIN, Martin, F.
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Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract Barite serves as a key proxy for reconstructing paleo‐oceanic productivity and chemistry in modern and ancient marine sediments. Although contemporary barite precipitation involves biological mediation, the mechanisms responsible for ancient barite formation remain unclear.
Shiqi Cheng +5 more
wiley +1 more source
Lower Ordovican acritarchs from successions in England and North Wales. [PDF]
, 1979 One hundred and thirty eight acritarch taxa are described from the organic residues of samples collected in North Wales, Shropshire, and the Lake District. The species occur in one or more of 16 microfloral assemblages, selected from 88 prepared samples.
Booth, Graham Arthur
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New Zealand Geological Timescale 2025
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.New Zealand Geological Timescale 2025 (NZGT 2025) is the first comprehensive update and revision of the New Zealand Geological Timescale in a decade. The criteria used to establish age ranges of New Zealand Stages within the NZGT have been reviewed, calibrated, and revised where required against the 2023/04 International Chronostratigraphic Chart and ...
Christopher D. Clowes +13 more
wiley +1 more source
The palynology and stratigraphy of the Cambrian Nolichucky Shale and associated formations at Thorn Hill, Tennessee, USA [PDF]
, 2012 A detailed palynological and stratigraphic study was undertaken on the Cambrian Nolichucky Shale, Maynardville Limestone and Copper Ridge Dolomite (Conasauga Group), as exposed at Thorn Hill, northeastern Tennessee, USA.
Pedder, Brian E
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