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Calcipatera cottonwoodensis, a new membranous late Paleozoic calcareous alga

Published online by Cambridge University Press:  20 May 2016

A. M. Torres ,
R. R. West  and
R. S. Sawin
A. M. Torres
Affiliation:
Department of Botany, University of Kansas, Lawrence 66045
R. R. West
Affiliation:
Department of Geology, Kansas State University, Manhattan 66506
R. S. Sawin
Affiliation:
P.O. Box 1101, Casper, Wyoming 82602
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Abstract

A new morphological type of Paleozoic calcareous alga is represented by Calcipatera cottonwoodensis n. gen. and sp., a codiacean species found in the Cottonwood Limestone Member, Lower Permian, of eastern Kansas. The new species, as reconstructed from serial sections of weathered out, in situ, intact specimens, had a broadly obconical, cup-like membranous thallus. The internal structure of the membrane as seen in cross section consisted of a medulla with mosaic sparry calcite and bilateral cortices with calcite packets forming utricular molds similar to those of other known membranous algae. The sparry calcite apparently replaced the lightly calcified or uncalcified intercoenocytic spaces in the medulla and the calcite crystals replaced the interutricular aragonite. The organism had previously been identified as Anchicodium Johnson.

Type
Research Article
Information
Journal of Paleontology , Volume 66 , Issue 4 , July 1992 , pp. 678 - 681
Copyright
Copyright © The Paleontological Society 

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