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Microscleres of a Paleocene Geodia from western Alabama

Published online by Cambridge University Press:  14 July 2015

J. Keith Rigby
Affiliation:
Brigham Young University, Geology Department, 210 Page School, Provo, Utah 84602
Charles C. Smith
Affiliation:
Unocal Corporation, P.O. Box 4551, Houston, Texas 77210

Abstract

Siliceous sterraster microscleres of the choristid demosponge, Geodia Lamarck, 1815, occur in outcrops of the lower Porters Creek Formation (Paleocene) near Moscow Landing on the Tombigbee River in southeastern Sumter County, Alabama. This is the first report of that sponge from the Cretaceous–Tertiary of the Gulf Coastal Plain. The initially opaline spicules have been converted to clinoptilolite, a Na-K-Ca zeolite.

Type
Research Article
Copyright
Copyright © The Paleontological Society 

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