Cambrian faunas of China

Significant carbon isotope excursions in the Cambrian and their implications for global correlations

“…This boundary coincides with a worldwide extinction of trilobites first identified in North China by Walcott [68], and with the coeval mass extinction existing at the boundary of the Pterocephaliid Biomere and the Marjumiid Biomere in Laurentia [60]. At the Paibi section (the GSSP of the base of the Furongian) in Western Hunan Province and other sections in South China, it is equivalent to the Series 3-Furongian (traditional Middle-Upper Cambrian) boundary [50,53].…”

Cambrian stratigraphy of the North China Platform: revisiting principal sections in Shandong Province, China

“…(k) Mictosaukia sp., cranidium, Fanzhuang section, SNUP5117. (l-m) Tsinania canens (Walcott, 1905); (l) cranidium, Tangwangzhai section, SNUP5118. ; (m) pygidium, Tangwangzhai section, SNUP5119.…”

“…(h-m) trilobites from the Chaomidian Formation. (h-i) Chuangia batia (Walcott, 1905); (h) cranidium, Jiulongshan section, SNUP5114. ; (i) pygidium, Jiulongshan section, SNUP5115.…”

“…The Lower Member (ca. 104-120 m thick) consists of thin-bedded limestones such as limestone-shale/ marlstone alternation, thin-bedded lime mudstone, laminated (Walcott, 1905), cranidium, Tangwangzhai section, SNUP5024. (b) Liostracina sp., cranidium, Tangwangzhai section, SNUP5109.…”

Furongian (late Cambrian) trilobites from theAsioptychaspis subglobosaZone of the Hwajeol Formation, Korea

“…However, this study proposes renaming the biozone as the Asioptychaspis subglobosa Zone. Sohn & Choi (2007) reported the occurrences of Pseudagnostus planulatus (Raymond, 1924), Asioptychaspis subglobosa (Sun, 1924), Tsinania canens (Walcott, 1905) and Haniwa sosanensis Kobayashi, 1933 from the Asioptychaspis Zone at the Sagundari section, and correlated this biozone to the 'Ptychaspis'-Tsinania Zone of North China. Because only Asioptychaspis morphology has been discovered in North China (see Chough et al, 2010, Kim 2012, the biozone name 'Ptychaspis'-Tsinania Zone should be changed to the Asioptychaspis-Tsinania Zone.…”