The Journal of Foraminiferal Research; October 2006; v. 36; no. 4;
p. 368-373; DOI: 10.2113/gsjfr.36.4.368
© 2006 Cushman Foundation for Foraminiferal Research
PARACOSTELLAGERINA NOV. GEN., A MERIDIONALLY COSTELLATE PLANKTONIC FORAMINIFERAL GENUS OF THE MIDDLE CRETACEOUS (LATEST ALBIAN-EARLIEST CENOMANIAN)
Marius D. Georgescu1 and
Brian T. Huber
National Museum of Natural History, Smithsonian Institution, 10th and Constitution Ave., Washington D.C. 20013-7012 USA
1 E-mail: georgescum{at}si.edu
A new genus is proposed to accommodate strongly ornamented hedbergellids of the latest Albian-earliest Cenomanian. Paracostellagerina nov. gen. is characterized by asymmetrical test ornamentation, rugosities, and costellae that are meridionally arranged on the umbilical side and parallel to the periphery on the spiral side. This genus has a global distribution within tropical-subtropical latitudes and, because of its short stratigraphic range, it is a valuable biomarker for correlation of uppermost Albian-lowermost Cenomanian sequences.
Copyright © 2009 by Cushman Foundation for Foraminiferal Research