New Data on Planktonic Foraminifera and Ostracods from the Barremian(?)–Aptian of the Eastern Crimea: Stratigraphy and Paleoecology
Journal: Stratigraphy and Geological Correlation
Year: 2023

Planktonic foraminifera and ostracods of the upper Barremian(?)–lower Aptian of the Kokluk section (eastern Crimea) are studied. Three interval-zones are established based on foraminifera: Globigerinelloides blowi, Hedbergella ruka and H. excelsa. Beds with H. ruka are described as a zone. Based on ostracods, Robsoniella minima–Loxoella variealveolata Zone and Beds with Cytheropteron tesakovae are determined. An interval possibly corresponding to OAE 1a is recognized. The species C. tesakovae is