The genus Cymbella is a bottom living (benthic) genus, often producing stalks. Cymbella cymbiformis is a freshwater species.
Cymbella, species undetermined. Found in diatomite deposit at Three Lakes, core TL5, at 3.6 to 3.7 m depth; also in core TL1 at 5.95 and 5.99 m depth.
Cymbella cymbiformis(?) in TL5 and TL1 at 5.77 m depth.
See Cymbella on Algaebase or
Diatoms.org or on the
Natural History Museum of Wales website.