An oxygen-rich atmosphere is essential for complex animals. The early Earth had an anoxic
atmosphere, and understanding the rise and maintenance of high O2 levels is critical for …

The early evolutionary and much of the extinction history of marine animals is thought to be
driven by changes in dissolved oxygen concentrations ([O2]) in the ocean,–. In turn,[O2] is …

Several past attempts to model the variation in atmospheric oxygen through the Paleozoic
give generally conflicting results, but all agree that pO 2 rose to a peak in the late Paleozoic …

Marine biodiversity increased markedly during the Ordovician Period (~ 487–443 million
years ago). Some intervals within the Ordovician were associated with unusually rapid and …

The earliest evidence of wildfire is documented from two localities: the early mid-Silurian
Pen-y-lan Mudstone, Rumney, Wales (UK), and the late Silurian Winnica Formation …

Oxygen concentration defines the chemical structure of Earth's ecosystems while it also fuels
the metabolism of aerobic organisms. As different aerobes have different oxygen …

Global cooling has been proposed as a driver of the Great Ordovician Biodiversification
Event, the largest radiation of Phanerozoic marine animal Life. Yet, mechanistic …

Abstract The Ordovician of Scandinavia (ie Denmark, Norway and Sweden) has been
investigated for over two centuries and, through time, various chronostratigraphic schemes …

Wildfire has been implicated as a potential driver of deforestation and continental
biodiversity loss during the end-Permian extinction event (EPE;∼ 252 Ma). However, it …

Marine ironstone is a Phanerozoic biochemical sedimentary rock that contains abundant
primary iron. Although rare, ironstone is conspicuous in the Paleozoic sedimentary record …