Researchers report beginning and ending ages for the Shuram carbon isotope excursion, a large and known disturbance to the global carbon cycle, as being approximately 574 and 567.3 million years ago, respectively; the findings suggest that the Shuram excursion was globally synchronous and that the known development of complex life was likely decoupled from global-scale biogeochemical events, according to the authors.
Article #20-02918: "Calibrating the coevolution of Ediacaran life and environment," by Alan D. Rooney et al.
MEDIA CONTACT: Alan D. Rooney, Yale University, New Haven, CT; e-mail: < alan.rooney@yale.edu >
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Proceedings of the National Academy of Sciences