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SIGNIFICANCE OF THE BRADYINIDAE AND PARAJANISCHEWSKINA N. GEN. FOR BIOSTRATIGRAPHIC CORRELATIONS OF THE LATE VISEAN (MISSISSIPPIAN) IN WESTERN PALEOTETHYAN BASINS

¹ Instituto de Geología Económica CSIC-UCM, UEI y Departamento de Paleontología, Facultad de Ciencias Geológicas, José Antonio Novais 2, 28040-Madrid, Spain. Email: pcozar{at}geo.ucm.es
² University College Dublin, Department of Geology, Belfield, Dublin 4, Ireland.

Members of the Bradyinidae in some British and Irish upper Visean sections have been analyzed, especially the first occurrence of "Janischewskina" in the basal Brigantian stratotype, at the Janny Wood section (northern England). Most specimens of "Janischewskina" illustrated from the British sections show a distinctive keriothecal wall in some of the final septa that is the basis for creating Parajanischewskina brigantiensis n. gen. n. sp. The genera of the family Bradyinidae are considered excellent markers for the zonation of the late Visean in western Paleotethyan basins. Thus, Bradyina first occurs near the end of the late Asbian, Parajanischewskina at the beginning of the Brigantian, Parabradyina in the middle part of the early Brigantian, and Janischewskina at the beginning of the late Brigantian.

This article has been cited by other articles:

				P. Cozar, I. D. Somerville, and I. Burgess New Foraminifers in the Visean/Serpukhovian Boundary Interval of the Lower Limestone Formation, Midland Valley, Scotland Journal of Paleontology, September 1, 2008; 82(5): 906 - 923. [Abstract] [Full Text] [PDF]