منابع مشابه
Planktonic foraminifera model
A dynamic global model for planktonic foraminifera I. Fraile, M. Schulz, S. Mulitza, and M. Kucera Department of Geosystem modelling, University of Bremen, P.O. Box 330440, 28334 Bremen, Germany DFG Research Center Ocean Marigins, University of Bremen, P.O. Box 330440, 28334 Bremen, Germany Institute of Geosciences, Eberhard Karls University of Tübingen, Sigwartstrasse 10, 72076 Tübingen, Germa...
متن کاملIterative evolution of digitate planktonic foraminifera
—Digitate shell morphologies have evolved repeatedly in planktonic foraminifera throughout the Cretaceous and Cenozoic. Digitate species are usually rare in fossil and modern assemblages but show increased abundance and diversity at times during the Cretaceous and middle Eocene. In this paper we discuss the morphology and stratigraphic distribution of digitate planktonic foraminifera and establ...
متن کاملA dynamic global model for planktonic foraminifera
1 Department of Geosystem modelling, University of Bremen, P.O. Box 330440, 28334 Bremen, Germany 2 DFG Research Center Ocean Marigins, University of Bremen, P.O. Box 330440, 28334 Bremen, Germany 3 Institute of Geosciences, Eberhard Karls University of Tübingen, Sigwartstrasse 10, 72076 Tübingen, Germany Received: 17 October 2007 – Accepted: 17 October 2007 – Published: 26 November 2007 Corres...
متن کاملBiostratigraphic and Geological Significance of Planktonic Foraminifera
Jurassic Favusellidae 1 2 3 a b 1 2 a b 3 a 1 b 2 3 1 2 1 1 1 2 3 2 2 3 2 4 1 3 4 a b 1 2 3 1 2 1 2 a b b a a b b a b a Praehedbergellidae Hedbergellidae a b 3 b a a b
متن کاملX-raying Circumstellar Material around Young Stars
Young stars are surrounded by copious amounts of circumstellar material. Its composition, in particular its gas-to-dust ratio, is an important parameter. However, measuring this ratio is challenging, because gas mass estimates are often model dependent. X-ray absorption is sensitive to the gas along the line-of-sight while optical/near-IR extinction depends on the dust. Therefore, the absorber’...
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ژورنال
عنوان ژورنال: Journal of Micropalaeontology
سال: 1988
ISSN: 2041-4978
DOI: 10.1144/jm.7.1.43