Bangiomorpha pubescens n. gen., n. sp.: implications for the evolution of sex, multicellularity, and the Mesoproterozoic/Neoproterozoic radiation of eukaryotes

@inproceedings{Butterfield2000BangiomorphaPN,
  title={Bangiomorpha pubescens n. gen., n. sp.: implications for the evolution of sex, multicellularity, and the Mesoproterozoic/Neoproterozoic radiation of eukaryotes},
  author={Nicholas J.F. Butterfield},
  booktitle={Paleobiology},
  year={2000}
}
Abstract Multicellular filaments from the ca. 1200-Ma Hunting Formation (Somerset Island, arctic Canada) are identified as bangiacean red algae on the basis of diagnostic cell-division patterns. As the oldest taxonomically resolved eukaryote on record Bangiomorpha pubescens n. gen. n. sp. provides a key datum point for constraining protistan phylogeny. Combined with an increasingly resolved record of other Proterozoic eukaryotes, these fossils mark the onset of a major protistan radiation near… 
The Weng'an biota and the Ediacaran radiation of multicellular eukaryotes
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Megasphaera is a multicellular eukaryote with evidence for cell-to-cell adhesion, a flexible membrane unconstrained by a rigid cell wall, spatial cellular differentiation, germ-soma separation, and programmed cell death.
A new monotypic family for the enigmatic crustose red alga Plagiospora gracilis
Plagiospora gracilis, a mucilaginous crustose red alga growing on subtidal pebbles on both coasts of the North Atlantic Ocean, forms distinctive tetrasporangia (red algal meiotic structures that
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A molecular phylogenetic analysis of the Bangiales (Rhodophyta) and description of a new genus and species, Pseudobangia kaycoleia
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A one-billion-year-old multicellular chlorophyte
TLDR
Filamentous macrofossils from the one-billion-year-old Nanfen Formation of northern China are interpreted as a new species of early multicellular green algae, suggesting that chlorophytes acquired macroscopic size,Multicellularity and cellular differentiation nearly a billion years ago, much earlier than previously thought.
A NEW LOOK AT AN ANCIENT ORDER: GENERIC REVISION OF THE BANGIALES (RHODOPHYTA) 1
The red algal order Bangiales has been revised as a result of detailed regional studies and the development of expert local knowledge of Bangiales floras, followed by collaborative global analyses
Precise age of Bangiomorpha pubescens dates the origin of eukaryotic photosynthesis
TLDR
This work presents new Re-Os isotopic ages from sedimentary rocks that stratigraphically bracket the occurrence of B. pubescens in the Bylot Supergroup of Baffin Island and revise its first appearance to 1.25 Ga, younger than commonly held interpretations and permits more precise estimates of early eukaryotic evolution.
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References

SHOWING 1-10 OF 121 REFERENCES
A molecular phylogeny of the marine red algae (Rhodophyta) based on the nuclear small-subunit rRNA gene.
TLDR
Tests under maximum-likelihood and parsimony of alternative phylogenies based on structure and chemistry refuted suggestions that Acrochaetiales is the most primitive florideophyte order and that Gelidiales and Hildenbrandiales are sister groups.
Palaeoconchocelis starmachii, a carbonate boring microfossil from the Upper Silurian of Poland (425 million years old): implications for the evolution of the Bangiaceae (Rhodophyta)
Abstract A 425 million-year-old organically preserved endolithic microfossil, Palaeoconchocelis starmachii Campbell, Kazmierczak, and Golubic (1979), from sedimentary strata of the Upper Silurian of
The origin of red algae: implications for plastid evolution.
  • J. Stiller, B. Hall
  • Biology
    Proceedings of the National Academy of Sciences of the United States of America
  • 1997
TLDR
Phylogenetic analyses provide strong statistical support for an early evolutionary emergence of the Rhodophyta that preceded the origin of the line that led to plants, animals, and fungi, and argue for a reexamination of current models of plastid evolution.
Systematics of Bangia (Rhodophyta) in North America. I. Biogeographic trends in morphology
TLDR
Growth in culture under controlled or varied conditions resulted in a similar trend of basin-based differences in filament diameters for asexual germlings, mature asexual pla...
A gene phylogeny of the red algae (Rhodophyta) based on plastid rbcL.
A phylogeny for the Rhodophyta has been inferred by parsimony analysis of plastid rbcL sequences representing 81 species, 68 genera, 38 families, and 17 orders of red algae; rbcL encodes the large
Permineralized Fossils from the Terminal Proterozoic Doushantuo Formation, South China
Permineralized fossils of the terminal Proterozoic (600–550 Ma) Doushantuo Formation, China, provide an unusually clear window on biological diversity just before the Ediacaran radiation. In the
Testate amoebae in the Neoproterozoic Era: evidence from vase-shaped microfossils in the Chuar Group, Grand Canyon
Abstract Vase-shaped microfossils (VSMs) occur globally in Neoproterozoic rocks, but until now their biological relationships have remained problematic. Exceptionally preserved new populations from
DISTRIBUTION AND SALINITY ADAPTATIONS OF BANGIA ATROPURPUREA (RHODOPHYTA), A PUTATIVE MIGRANT INTO THE LAURENTIAN GREAT LAKES 1
In a survey of the distribution of Bangia atropurpurea (Roth) Ag. along the north and east shorelines of the Laurentian Great Lakes, it was observed that this species was concentrated in the lower
DEVELOPMENTAL AND CYTOLOGICAL STUDIES OF BANGIA FUSCOPURPUREA IN CULTURE
Two isolates of the red alga Bangiafuscopurpurea have been cultured for over 3 years. The diplobiontic life history consists of morphologically dissimilar generations, the Bangiaand
...
...