Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 22 June 1984:
Vol. 224. no. 4655, pp. 1334 - 1336
DOI: 10.1126/science.224.4655.1334
Prev | Table of Contents | Next

Articles

Paleoceanographic Events and Deep-Sea Ostracodes

RICHARD H. BENSON 1, RALPH E. CHAPMAN 1, and LINDA T. DECK 1

1 Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, D.C. 20560

Eight recognized or theorized paleoceanographic events during the past 70 million years were tested against changes in the global deep-sea benthic ostracode fauna. Two events, the sudden Cretaceous-Tertiary boundary event at 66 million years ago and the more gradual 40-million-year event (formation of the psychrosphere), show up most dramatically. Before the 40-million-year event, ostracodes freely radiated into the deeper water regions but were provincial. The development of thermal stratification isolated these deep-water taxa, mostly the survivors of the Cretaceous-Tertiary boundary event, which adapted to a new, free-flowing but more frigid ecosystem and spread rapidly throughout the world.

Submitted on December 30, 1983
Accepted on April 18, 1984


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
DEEP-SEA OSTRACODS FROM THE SOUTH ATLANTIC SECTOR OF THE SOUTHERN OCEAN DURING THE LAST 370,000 YEARS.
M. YASUHARA, T. M. CRONIN, G. HUNT, and D. A. HODELL (2009)
Journal of Paleontology 83, 914-930
   Abstract »    Full Text »    PDF »
Climatically driven macroevolutionary patterns in the size of marine diatoms over the Cenozoic.
Z. V. Finkel, M. E. Katz, J. D. Wright, O. M. E. Schofield, and P. G. Falkowski (2005)
PNAS 102, 8927-8932
   Abstract »    Full Text »    PDF »
Abrupt Climate Change and Extinction Events in Earth History.
T. J. Crowley, T. J. Crowley, and G. R. North (1988)
Science 240, 996-1002
   Abstract »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)