On the co‐evolution of surface oxygen levels and animals

DB Cole, DB Mills, DH Erwin, EA Sperling… - …, 2020 - Wiley Online Library
Few topics in geobiology have been as extensively debated as the role of Earth's
oxygenation in controlling when and why animals emerged and diversified. All currently …

Lost world of complex life and the late rise of the eukaryotic crown

JJ Brocks, BJ Nettersheim, P Adam, P Schaeffer… - Nature, 2023 - nature.com
Eukaryotic life appears to have flourished surprisingly late in the history of our planet. This
view is based on the low diversity of diagnostic eukaryotic fossils in marine sediments of mid …

Dating the late Proterozoic stratigraphic record

GP Halverson, SM Porter… - Emerging Topics in Life …, 2018 - portlandpress.com
The Tonian and Cryogenian periods (ca. 1000–635.5 Ma) witnessed important biological
and climatic events, including diversification of eukaryotes, the rise of algae as primary …

Free and kerogen‐bound biomarkers from late Tonian sedimentary rocks record abundant eukaryotes in mid‐Neoproterozoic marine communities

JA Zumberge, D Rocher, GD Love - Geobiology, 2020 - Wiley Online Library
Lipid biomarker assemblages preserved within the bitumen and kerogen phases of
sedimentary rocks from the ca. 780–729 Ma Chuar and Visingsö Groups facilitate …

Precise U-Pb age models refine Neoproterozoic western Laurentian rift initiation, correlation, and Earth system changes

C Dehler, M Schmitz, A Bullard, S Porter… - Precambrian …, 2023 - Elsevier
Abstract The upper Tonian ChUMP (Chuar-Uinta Mountains-Pahrump) strata of the
southwestern USA are hypothesized to be regional correlatives and to record a time of rift …

Neoproterozoic of laurentia

FA Macdonald, WA Yonkee, RM Flowers… - 2023 - pubs.geoscienceworld.org
Neoproterozoic to Cambrian isolation of Laurentia during the breakup of Rodinia was
associated with multiple large igneous provinces, protracted multiphase rifting, and variable …

Cambrian Sauk transgression in the Grand Canyon region redefined by detrital zircons

K Karlstrom, J Hagadorn, G Gehrels, W Matthews… - Nature …, 2018 - nature.com
The Sauk transgression was one of the most dramatic global marine transgressions in Earth
history. It is recorded by deposition of predominantly Cambrian non-marine to shallow …

Zircon (U-Th)/He thermochronology reveals pre-Great Unconformity paleotopography in the Grand Canyon region, USA

BA Peak, RM Flowers, FA Macdonald… - …, 2021 - pubs.geoscienceworld.org
Abstract The Great Unconformity is an iconic geologic feature that coincides with an
enigmatic period of Earth's history that spans the assembly and breakup of the …

Phylogenomics and morphological reconstruction of Arcellinida testate amoebae highlight diversity of microbial eukaryotes in the Neoproterozoic

DJG Lahr, A Kosakyan, E Lara, EAD Mitchell, L Morais… - Current Biology, 2019 - cell.com
Life was microbial for the majority of Earth's history, but as very few microbial lineages leave
a fossil record, the Precambrian evolution of life remains shrouded in mystery. Shelled …

[HTML][HTML] Organic-walled microfossils from the late Mesoproterozoic to early Neoproterozoic lower Shaler Supergroup (Arctic Canada): diversity and biostratigraphic …

CC Loron, RH Rainbird, EC Turner, JW Greenman… - Precambrian …, 2019 - Elsevier
The diversification of acritarchs (organic-walled vesicular microfossils of unknown affinity),
filamentous, and multicellular microorganisms, happened during a time of profound …