Radiolarians of the uppermost Oxfordian (Hypselum Zone) of the Wieluń Upland (central Poland)
Journal Title: Volumina Jurassica - Year 2016, Vol 14, Issue 1
Abstract
Radiolarian assemblages from the uppermost Oxfordian (Hypselum Zone) deposits of two sections (Katarowa Góra and Bobrowniki) in the Wieluń Upland (central Poland) are studied for the first time. The overall composition of the assemblages is characterized by low taxonomic diversity, with many individuals of spherical morphotypes, with dominance of the family Williriedellidae and Gongylothoracidae, among the nassellarians. The radiolarians show features mostly of the Northern Tethyan fauna. Additionally, more cosmopolitan forms consisting of spumellarians and of cold water representatives of the family Parvicingulidae appear in the middle and upper parts of the Hypselum Zone. This change in the character of the radiolarian assemblages suggests Boreal influences into the Submediterranean basin related to activity of sea currents, which have been stimulated by climatic changes during the latest Oxfordian.
Authors and Affiliations
Jolanta SMOLEŃ
Oolitowy cykl sedymentacyjny wczesnego kimerydu w profilu Wierzbicy koło Radomia
News and Reviews – 9th International Congress on the Jurassic System, Jaipur, India
v
Warsaw Remarks – Berriasian Progress
THE ROLE OF LEADERSHIP IN THE PROCESS OF DIRECTING THE ORGANIZATION OF THE POLICE
Calcareous nannofossils from the uppermost Oxfordian and lowermost Kimmeridgian of Staffin Bay, Isle of Skye, northern Scotland
Twenty six samples from the sections at Flodigarry and Digg at Staffin Bay, Isle of Skye, northern Scotland, spanning the stratigraphical interval from the uppermost Oxfordian to the lowermost Kimmeridgian were examined...