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BENTHIC FORAMINIFERA IN THE AFTERMATH OF THE CENOMANIAN-TURONIAN BOUNDARY EXTINCTION EVENT IN THE CARBONATE PLATFORM FACIES OF THE SOUTHERN APENNINES (ITALY)

Arriaga, M.E.1, Frijia, G.2, Parente, M.3 and Caus, E.1
 
1 Departament de Geologia, Universitat Autònoma de Barcelona, 08193-Bellaterra, Spain
2 Department of Earth Sciences, Sulatn Qaboos University, Al-Khoudh 123, Muscat, Sultanate of Oman.
3 Dipartimento di Scienze della Terra, dell’Ambiente e delle Risorse, Università degli Studi di Napoli Federico II, Largo San Marcellino 10, 80138 Napoli, Italy
 
Journal of Foraminiferal Research, v. 46, no. 1, p. 9–24, January 2016
 
Abstract
After the two-step extinction event that eliminated all the complex larger benthic foraminifera in the latest Cenomanian, the early Turonian benthic foraminiferal assemblages consisted of small, morphologically simple taxa; these were found in the few carbonate platforms that survived drowning during the Cenomanian-Turonian boundary interval. In this paper, we provide detailed morphologic descriptions of the most typical species of the Turonian benthic foraminiferal assemblages from the Apennine carbonate platform of southern Italy, along with some remarks on their suprageneric systematic position. Their chronostratigraphic range is firmly constrained by
integrating carbon- and strontium-isotope stratigraphy.
 
Key-words: Benthic foraminifera, Systematics, isotope stratigraphy, Carbonate Platforms, Upper Cretaceous, Cenomanian-Turonian boundary extinction, OAE2, southern Apeninnes, Italy