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Affinity, life cycle, and intracellular complexity of organic-walled microfossils from the Mesoproterozoic of Shanxi, China
Abstract. Light microscope and scanning electron microscope observations on new material of unicellular microfossils Dictyosphaera macroreticulata and Shuiyousphaeridium macroreticulatum, from theExpand
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Diversity of organic-walled microfossils from the early Mesoproterozoic Ruyang Group, North China Craton – A window into the early eukaryote evolution
Mesoproterozoic Era was an important time for the initial diversification of eukaryotic groups and the appearance of the first complex morphologies. While eukaryotes evolved around 2.4 Ga, the firsExpand
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Anoxic ecosystems and early eukaryotes.
Through much of the Proterozoic Eon (2.5-0.54 billion years ago, Ga), oceans were dominantly anoxic. It is often assumed that this put a brake on early eukaryote diversification because eukaryotesExpand
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A Tonian age for the Visingsö Group in Sweden constrained by detrital zircon dating and biochronology: implications for evolutionary events
Detrital zircon U–Pb ages from samples of the Neoproterozoic Visingso Group, Sweden, yield a maximum depositional age of ≤ 886±9 Ma (2σ). A minimum depositional age is established biochronologicallyExpand
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Timing of the origin of plastid and evolutionary history of Chlorophyta by microfossil record
The origin of plastid in eukaryotes and the minimum age of this event based on microfossil recordare indirectly inferred by recognizing green algae among organically preserved,Expand
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Reproductive cyst and operculum formation in the Cambrian–Ordovician galeate-plexus microfossils
Abstract Unicellular organic-walled microfossils from the Cambrian–Ordovician transition in Estonia (ca. 490–480 million years ago) exhibit rare characters reflecting their function as reproductiveExpand
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Palaeobiology and diversification of Proterozoic-Cambrian photosynthetic eukaryotes
One of the most important events in the history of life is the evolution of the complex, eukaryotic cell. The eukaryotes are complex organisms with membrane-bound intracellular structures, and theyExpand
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Organically-preserved multicellular eukaryote from the early Ediacaran Nyborg Formation, Arctic Norway
Eukaryotic multicellularity originated in the Mesoproterozoic Era and evolved multiple times since, yet early multicellular fossils are scarce until the terminal Neoproterozoic and often restrictedExpand
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Stromatolites in Walker Lake (Nevada, Great Basin, USA) record climate and lake level changes ~ 35,000 years ago
Abstract Walker Lake is a closed-basin remnant of the large Pleistocene glacial Lake Lahontan system that has experienced multiple high amplitude (100–200 m) changes in water level over the past ~Expand
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Ecdysozoan-like sclerites among Ediacaran microfossils
One of the most important events in the history of life is the evolution of the complex, eukaryotic cell. The eukaryotes are complex organisms with membrane-bound intracellular structures, and theyExpand
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