Estimating paleoenvironments using ecological niche models of nearest living relatives: A case study of Eocene Aesculus L. Eukaryotic Algae Associated with Mid-Proterozoic Black Chert in Northern China Investigation on the Procaryotic Microfossils from the Gaoyuzhuang Formation, Jixian, North China New Microorganisms from the Gaoyuzhuang Formation of Northern Taihang Mountains, China New Discoveries of Phaeophycean Fossils in the Early Cambrian, Haikou, Kunming,Yunnan, Southwest China A New Microphytoplankton Species from the Sinian of Western Hubei Province The Occurrence of Longfengshania in the Early Cambrian from Haikou, Yunnan, China Leaf-like Rhodophycean Fossils in the Early Cambrian from Haikou, Kunming, Yunnan of China