Transverse groove is shown, which contains the transverse . One can also see a part of the longitudinal groove and the whole longitudinal . indicates 50 µm. Sample from the Lake Constance (vicinity of Bodman). The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.
For permission to use of (high-resolution) images please contact postmaster@protisten.de.
Wolfgang Bettighofer, www.protisten.de.
