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Original Articles

DIMORPHISM IN CYCLOSTEPHANOS DUBIUS (BACILLARIOPHYTA) AND THE MORPHOLOGY OF INITIAL VALVES

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Pages 35-46 | Published online: 31 Oct 2011
 

Abstract

Analysis of the morphological variation of Cycbstephanos dubius in recent populations and subfossil sediments revealed two distinct morphotypes, characterized by the size range of the valves and the number of costae per valve. The morphotypes were found in varying abundances and often in conjunction with initial valves, indicating a possible relationship to the life cycle of this species.

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