Lipids can survive long geological intervals within sediments and provide a unique tool that
allows the reconstruction of past organismic diversity and environmental conditions. The …

The microfossil record demonstrates the presence of eukaryotic organisms in the marine
ecosystem by about 1,700 million years ago (Ma). Despite this, steranes, a biomarker …

The mudstones of the Lucaogou Formation are the most important and organic-rich
sediments and tight oil exploration target in the northwestern China. The organic and stable …

The pre-Devonian shales are important natural archives, preserving extensive information
on paleobiology, paleoenvironment, and paleoecology, and also acting as important …

Lipid biomarker assemblages preserved within the bitumen and kerogen phases of
sedimentary rocks from the ca. 780–729 Ma Chuar and Visingsö Groups facilitate …

Abstract The Paleoproterozoic Barney Creek Formation, which is currently interpreted as a
restricted, deep marine paleoenvironment, plays a disproportionate role in our …

Abstract The Permian Fengcheng Formation in the Mahu Sag in the Junggar Basin
represents deposition in a rare alkaline saline lake, with hydrologically closed conditions …

The discovery of mid‐Proterozoic (1.8–0.8 billion years ago, Ga) indigenous biomarkers is a
challenge, since biologically informative molecules of such antiquity are commonly …

Abstract The Middle Permian Lucaogou Formation in the Jimusaer Sag is a hotspot for
exploring and developing lacustrine tight oil in the Junggar Basin, NW China. In this study …

Both molecular clocks and the fossil record indicate that eukaryotic algae evolved by the late
Paleoproterozoic Era (2500 to 1600 million years ago, Ma). However, the biomarker record …