Dynamic variation of Middle to Late Ordovician cephalopod provincialism in the northeastern peri-Gondwana region and its implications. - Fang, Xiang; Burrett, Clive; Li, Wenjie; Zhang, Yunbai; Zhang, Yuandong; Chen, Tingen; Wu, Xuejin (Palaeogeography, Palaeoclimatology, Palaeoecology, 2019)