Qing Tang, Wentao Zheng, Shuhan Zhang, Junxuan Fan, Leigh Anne Riedman, Xudong Hou, A D Muscente, Natalia Bykova, Peter M Sadler, Xiangdong Wang, Feifei Zhang, Xunlai Yuan, Chuanming Zhou, Bin Wan, Ke Pang, Qing Ouyang, N Ryan McKenzie, Guochun Zhao, Shuzhong Shen, Shuhai Xiao
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引用次数: 0
Abstract
The global diversity of Proterozoic eukaryote fossils is poorly quantified despite its fundamental importance to the understanding of macroevolutionary patterns and dynamics on the early Earth. Here we report a new construction of fossil eukaryote diversity from the Paleoproterozoic to early Cambrian based on a comprehensive data compilation and quantitative analyses. The resulting taxonomic richness curve verifies Cryogenian glaciations as a major divide that separates the "Boring Billion" and Ediacaran periods, with the former characterized by a prolonged stasis, and the latter by greater diversity, more-rapid turnover, and multiple radiations and extinctions. These contrasting evolutionary patterns and dynamics provide a framework to test competing hypotheses on biosphere and geosphere coevolution in the Proterozoic Eon.
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