CALCAREOUS NANNOPLANKTON RESPONSE TO THE LATEST CENOMANIAN OCEANIC ANOXIC EVENT 2 PERTURBATION
Journal: Riviste UNIMI (Università degli studi di Milano)
Year: 2017

Morphometric analyses were performed on Biscutum constans, Zeugrhabdotus erectus, Discorhabdus rotatorius and Watznaueria barnesiae specimens from five sections spanning the Cenomanian-Turonian boundary interval including Oceanic Anoxic Event (OAE) 2 (~ 94 Ma). The study provides evidence for size fluctuations and dwarfism of B. constans during OAE 2, followed by a partial recovery at the end of the event: this taxon appears to be the most sensitive species, with similar and coeval size trends i