Articles | Volume 41, issue 1
J. Micropalaeontol., 41, 1–27, 2022
https://doi.org/10.5194/jm-41-1-2022
J. Micropalaeontol., 41, 1–27, 2022
https://doi.org/10.5194/jm-41-1-2022
Research article
07 Feb 2022
Research article | 07 Feb 2022

Astronomical calibration of late middle Eocene radiolarian bioevents from ODP Site 1260 (equatorial Atlantic, Leg 207) and refinement of the global tropical radiolarian biozonation

Mathias Meunier and Taniel Danelian

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Short summary
This study presents the biostratigraphic analysis of radiolaria (siliceous zooplankton) from a section of middle Eocene age located in the equatorial Atlantic. Our study allows the refinement of the age of 71 radiolarian bioevents. Based on a comparison with previously reported ages in the equatorial Pacific and northwestern Atlantic, we establish the synchronicity of several bioevents between the two oceans. Some of these synchronous bioevents were used to define seven new subzones.