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Science 15 January 1982:
Vol. 215. no. 4530, pp. 303 - 304
DOI: 10.1126/science.215.4530.303
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Articles

Stephanopogon, a Phylogenetically Important "Ciliate," Shown by Ultrastructural Studies to Be a Flagellate

DIANA L. LIPSCOMB 1 and JOHN O. CORLISS 1

1 Department of Zoology, University of Maryland, College Park 20742

A benthic marine protist (Stephanopogon) with a homokaryotic nucleus has long been considered to be a gymnostome ciliate. It has been important in hypotheses concerning the origin of ciliates, the evolution and origin of the dual nuclear apparatus of contemporary species of the Ciliophora, and the origin of the multicellular Eumetazoa. Ultrastructural observations reveal that the organism should be reclassified as a flagellate, despite its superficial resemblance to ciliates.

Submitted on May 11, 1981
Revised on August 11, 1981


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Bridging Morphological Transitions to the Metazoa.
R. A. Dewel, M. U. Connell, and W. C. Dewel (2003)
Integr. Comp. Biol. 43, 28-46
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Science. ISSN 0036-8075 (print), 1095-9203 (online)