Differential Response of Ostracod Ontogeny after the End Permian Mass Extinction
Yuan Aihua
Wan Junyu
Zhao Kui
Ma Xuefeng
Feng Qinshuang
Yu Jianxin
Feng Qinglai
Abstract：There are relatively abundant ostracod fossils remaining when the most critical mass extinction in the Phanerozoic occurs during the Permian-Triassic.These fossils provide an important carrier for studying the adaptive evolution of organisms undergoing the extinction and recovery.This research focuses on four ostracod species widely distributed in shallow marine environment during this period and measured and analyzed 1 172 valves/carapaces for length and height.The results display certain degree of abnormal variations take place in the ostracod instar structure,growth rate and body size following the mass extinction,but the changes vary among different sedimentary facies,species and ontogeny stages.This indicates that ostracods may have adopted proactive,diverse,and complex survival strategies in response to the mass extinction.
Keywords：Permian-Triassicbiological evolutionostracodaontogenycarapace sizestratigraphyenvironmental impact
Publication Date：2025-03-14
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：14( 1023-1036 )