Carbonate rocks from the Middle Ediacaran period in locations all over the globe record the
largest excursion in carbon isotopic compositions in Earth history. This finding suggests a …

The Cambrian diversification of animals was long thought to have begun with an explosive
phase at the start of the Tommotian Age. Recent stratigraphic discoveries, however, suggest …

Geological evidence indicates that grounded ice sheets reached sea level at all latitudes
during two long-lived Cryogenian (58 and≥ 5 My) glaciations. Combined uranium-lead and …

The snowball Earth hypothesis predicts globally synchronous glaciations that persisted on a
multimillion year time scale. Geochronological tests of this hypothesis have been limited by …

Atmospheric CO 2 levels and global climate are regulated on geological timescales by the
silicate weathering feedback. However, this thermostat has failed multiple times in Earth's …

The distributions of 77 Neoproterozoic glacigenic formations are shown on global
palaeogeographic maps for 715 Ma (Sturtian), 635 Ma (Marinoan) and 580 Ma (Ediacaran) …

The early to mid-Paleoproterozoic Lomagundi-Jatuli Excursion (LJE) is ostensibly the
largest magnitude (approximately+ 5 to+ 30‰), longest duration (ca. 130–250 million years) …

The diversification of animals during the Cambrian Period is one of the most significant
evolutionary events in Earth's history. However, the sequence of events leading to the origin …

Abstract Interpretations of major climatic and biological events in Earth history are, in large
part, derived from the stable carbon isotope records of carbonate rocks and sedimentary …

Global carbon cycle perturbations throughout Earth history are frequently linked to changing
paleogeography, glaciation, ocean oxygenation, and biological innovation. A pronounced …