Hirnantian (Latest Ordovician) graptolites from the Upper Yangtze region, China

• Main Authors: Xu, C, Xuan, FJ, Melchin, MJ, Mitchell, CE
• Format: Report
• Language: English
• Published: WILEY-BLACKWELL 2005
• Subjects: Hirnantian; graptolites; extinction; astogenetic pattern; Yangtze region; SILURIAN BOUNDARY; ARCTIC CANADA; PHYLOGENETIC CLASSIFICATION; FAUNA; DIPLOGRAPTACEA; GRAPTOLOIDEA; CORNWALLIS; ORIGIN; ISLAND; Paleontology; Arctic; Canada; Cornwallis
• Online Access: http://ir.nigpas.ac.cn/handle/332004/19046

The Upper Yangtze region yields a Hirnantian (latest Ordovician) graptolite fauna that includes 41 species assigned to 13 genera. This fauna is particularly important for understanding the Late Ordovician mass extinction event because it is the most diverse known from this interval. In addition, it...