The chemical species involved in H2S signaling remain elusive despite the profound and
pleiotropic physiological effects elicited by this molecule. The dominant candidate …

Molybdenum is an essential trace element for human, animal and plant health and has
played an important part in the evolution of life on earth. Nonetheless, exposure to the …

Paleoredox conditions are commonly evaluated based on elemental proxies but, despite
their frequency of use, most of these proxies have received little comparative evaluation or …

Existing redox classifications and the calibrations of elemental proxies to modern
environmental redox scales are in need of re-evaluation. Here, we review environmental …

Sedimentary rocks deposited across the Proterozoic–Phanerozoic transition record extreme
climate fluctuations, a potential rise in atmospheric oxygen or re-organization of the seafloor …

The timing of divergences among metazoan lineages is integral to understanding the
processes of animal evolution, placing the biological events of species divergences into the …

Phosphorus is a limiting nutrient that is thought to control oceanic oxygen levels to a large
extent,–. A possible increase in marine phosphorus concentrations during the Ediacaran …

Major insights into the phylogenetic distribution, biochemistry, and evolutionary significance
of organelles involved in ATP synthesis (energy metabolism) in eukaryotes that thrive in …

The redox-sensitive transition element molybdenum is present in the Earth's crust at trace
concentrations but is abundant in seawater, marine sediments, and ancient sedimentary …

The reconstruction of oceanic paleoredox conditions on Earth is essential for investigating
links between biospheric oxygenation and major periods of biological innovation and …