Foraminiferal diversification during the late Paleozoic ice age
Groves, John R.1; Yue, Wang (王玥)2
2009-06-01
发表期刊PALEOBIOLOGY
ISSN0094-8373
卷号35期号:3页码:367-392
摘要

A record of late Paleozoic foraminiferal diversity, origination and extinction frequencies, and provincialism at million-year temporal resolution and species-level taxonomic resolution has been achieved by analyzing composite standard databases. Foraminiferal species diversity increased throughout Mississippian and Pennsylvanian time leading up to its peak at the Pennsylvanian/Permian boundary. Foraminifers then experienced a steep decline in diversity during the Early Permian. Frequencies of origination and extinction broadly tracked changes in global diversity. From Late Mississippian time onward, patterns in total foraminiferal diversity were dominated by fusulinoideans. There is no clear relationship between rates of foraminiferal evolution and the alternating glacial and nonglacial intervals that characterized the late Paleozoic ice age. Rather, high rates of origination and extinction might reflect instability of neritic environments as a consequence of high-frequency, high-amplitude base-level fluctuations (cyclothemic deposition). Further, the advent of algal symbiosis in fusulinoideans was a physiologic innovation that promoted diversification as these symbiont-bearing taxa experimented with morphologic adaptations for partitioning the low-nutrient environments to which they were specialized. Growth to large size and delayed maturation in fusulinoideans might have been enabled by the late Paleozoic hyperoxic atmosphere and the widespread development of oligotrophic, carbonate platform and shelf environments. The late Paleozoic history of foraminiferal diversification was influenced also by closure of the Rheic Ocean beginning in Late Mississippian time. Foraminiferal associations on opposite sides of Pangea exhibited relatively high similarity prior to the closure, but then similarity decreased steadily after destruction of the Subequatorial marine corridor. Arctic-Eurasian and North American associations were nearly isolated from one another throughout the main burst of fusulinoidean diversification, so that parallel lineages developed independently in the two regions, resulting in many instances of convergence.

语种英语
关键词[WOS]North-america ; Larger Foraminifera ; Fusulinacean Biostratigraphy ; Smaller Foraminifers ; Co2-forced Climate ; Appalachian Basin ; Algal Symbiosis ; United-states ; South China ; Evolution
资助项目Petroleum Research Fund of the American Chemical Society[44548-B8] ; Graduate College of the University of Northern Iowa ; National Science Foundation of China
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology ; Evolutionary Biology ; Paleontology
WOS类目Biodiversity Conservation ; Ecology ; Evolutionary Biology ; Paleontology
WOS记录号WOS:000268080200004
项目资助者Petroleum Research Fund of the American Chemical Society ; Graduate College of the University of Northern Iowa ; National Science Foundation of China
出版者PALEONTOLOGICAL SOC INC
文献类型期刊论文
条目标识符http://ir.nigpas.ac.cn/handle/332004/270
专题中国科学院南京地质古生物研究所
其他
通讯作者Groves, John R.
作者单位1.Univ No Iowa, Dept Earth Sci, Cedar Falls, IA 50614 USA
2.Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
推荐引用方式
GB/T 7714
Groves, John R.,Yue, Wang . Foraminiferal diversification during the late Paleozoic ice age[J]. PALEOBIOLOGY,2009,35(3):367-392.
APA Groves, John R.,&Yue, Wang .(2009).Foraminiferal diversification during the late Paleozoic ice age.PALEOBIOLOGY,35(3),367-392.
MLA Groves, John R.,et al."Foraminiferal diversification during the late Paleozoic ice age".PALEOBIOLOGY 35.3(2009):367-392.
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