Early fungi from the Proterozoic era in Arctic Canada

  title={Early fungi from the Proterozoic era in Arctic Canada},
  author={Corentin C. Loron and Camille François and R H Rainbird and Elizabeth C Turner and St{\'e}phan Borensztajn and Emmanuelle J Javaux},
Fungi are crucial components of modern ecosystems. They may have had an important role in the colonization of land by eukaryotes, and in the appearance and success of land plants and metazoans1–3. Nevertheless, fossils that can unambiguously be identified as fungi are absent from the fossil record until the middle of the Palaeozoic era4,5. Here we show, using morphological, ultrastructural and spectroscopic analyses, that multicellular organic-walled microfossils preserved in shale of the… 

Shale-hosted biota from the Dismal Lakes Group in Arctic Canada supports an early Mesoproterozoic diversification of eukaryotes

Abstract. The Mesoproterozoic is an important era for the development of eukaryotic organisms in oceans. The earliest unambiguous eukaryotic microfossils are reported in late Paleoproterozoic shales

Cryptic terrestrial fungus-like fossils of the early Ediacaran Period

The colonization of land by fungi had a significant impact on the terrestrial ecosystem and biogeochemical cycles on Earth surface systems. Although fungi may have diverged ~1500–900 million years

Molecular identification of fungi microfossils in a Neoproterozoic shale rock

Fungi fossils in a 810 to 715 million year old dolomitic shale from the Mbuji-Mayi Supergroup, Democratic Republic of Congo are identified as remnants of fungal networks and represent the oldest, molecularly identified remains of Fungi.

Early Eukaryotes in the Lakhanda Biota (Mesoproterozoic, Southeastern Siberia)-Morphological and Geochemical Evidence.

Fossils found in the Lakhanda Formation share remarkable similarities with Ourasphaira giraldae, a possible higher fungi species known from the Meso- to Neoproterozoic of Arctic Canada and can confidently be assigned to eukaryotes because of the size and high morphological complexity.

A one-billion-year-old multicellular chlorophyte

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.

Organically-preserved multicellular eukaryote from the early Ediacaran Nyborg Formation, Arctic Norway

Unexpected organically-preserved fossils from mudrocks are described, that provide support for the presence of organisms with differentiated cells (potentially an epithelial layer) in the late Neoproterozoic.

Non-pollen palynomorphs in deep time: unravelling the evolution of early eukaryotes

Abstract Most of the Precambrian (>538 Ma) fossil record, which includes the time before the onset of macroscopic multicellular life, consists of minute organically preserved remains of soft-bodied

Possible poriferan body fossils in early Neoproterozoic microbial reefs

Petrographically identical vermiform microstructure from approximately 890-million-year-old reefs is presented, which would provide the first physical evidence that animals emerged before the Neoproterozoic oxygenation event and survived through the glacial episodes of the Cryogenian period.

A molecular timescale for eukaryote evolution with implications for the origin of red algal-derived plastids

This period in the Meso- and Neoproterozoic Eras set the stage for the later expansion to dominance of red algal-derived primary production in the contemporary oceans, which profoundly altered the global geochemical and ecological conditions of the Earth.



Micropaleontology of the lower Mesoproterozoic Roper Group, Australia, and implications for early eukaryotic evolution

Roper fossils provide direct or inferential evidence for many basic features of eukaryotic biology, including a dynamic cytoskeleton and membrane system that enabled cells to change shape, life cycles that include resting cysts coated by decay-resistant biopolymers, reproduction by budding and binary division, osmotrophy, and simple multicellularity.

Probable Proterozoic fungi

Abstract A large, morphologically heterogeneous population of acanthomorphic acritarchs from the early Neoproterozoic Wynniatt Formation, Victoria Island, northwestern Canada, is ascribed to two

Fungus-like mycelial fossils in 2.4-billion-year-old vesicular basalt

Fungi have recently been found to comprise a significant part of the deep biosphere in oceanic sediments and crustal rocks. Fossils occupying fractures and pores in Phanerozoic volcanics indicate

Possible early foraminiferans in post-Sturtian (716−635 Ma) cap carbonates

Foraminifera are an ecologically important group of modern heterotrophic amoeboid eukaryotes whose naked and testate ancestors are thought to have evolved ∼1 Ga ago. However, the single-chambered

Early Diverging Fungi: Diversity and Impact at the Dawn of Terrestrial Life.

This review discusses the diversification and ecological roles of the fungi over their first 600 million years, from their origin through their colonization of land, drawing on phylogenomic evidence for their relationships and metabolic capabilities and on molecular dating, fossils, and modeling of Earth's paleoclimate.

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

Bangiomorpha pubescens is the first occurrence of complex multicellularity in the fossil record, and may account for the onset of a major protistan radiation near the Mesoproterozoic/NeoproTerozoic boundary.