Palaeoworld 

TL;DR: A generalized curve of carbon isotopes (δ13C) through the Cambrian suggests a relationship between major biotic events, sea level history and the development of deposits of exceptional preservation (Lagerstatten).

TL;DR: In several areas of southern Sweden, limestone nodules, locally called Orsten occur within bituminous alum shales, and the name "Orsten" has been referred to particular, mainly arthropod fossils from such nodules and, in a wider sense, to the specific type of preservation of minute fossil through secondarilyphosphatization as discussed by the authors.

TL;DR: The Kamura event as mentioned in this paper was the first sharp excursion of δ 13 C carb values in the volatile fluctuation interval that lasted for nearly 20 million years from the late-Middle Permian until the early-Middle Triassic.

TL;DR: Ginkgoales may have lived in various climates and diverse habitats, although most flourished in mesic and temperate climates, and the Late Cretaceous and Cenozoic ginkgos were largely confined to riparian environments.

TL;DR: In this article, the Permian-Triassic extinction pattern in the peri-Gondwanan region is documented biostratigraphically, geochemically and sedimentologically based on three marine sequences deposited in southern Tibet and comparisons with the sections in the Salt Range, Pakistan and Kashmir.