Yuandong （张元动） Zhang

TL;DR: In this article, a review of the research history and current status in the studies of the Ordovician chronostratigraphy in China, the subdivision and recognition of its series and stage boundaries, and possible stratigraphic gaps are discussed in details.

TL;DR: A revised conodont biozonal scheme for the Ordovician of South China is presented in this paper based on extensive studies following the pioneer work by the late Professor An and his co-workers in the 1980s.

TL;DR: The Furongian gap as mentioned in this paper is defined as the gap between the Cambrian Explosion and the Great Ordovician Biodiversification Event, exemplified by a marked drop in biodiversity.

TL;DR: In this article, the authors used multivariate methods, including cluster analysis, non-metric multidimensional scaling and network analysis, to define biogeographic provinces in the Middle and Late Ordovician.

TL;DR: In this paper, Chen et al. studied actinocerid nautiloids from the Lhasai Formation in the Xainza region and identified them as Middle Ordovician in age based on stratigraphic correlations with those from North China, Sibumasu, North Australia, and North America.