Sullivan, M.,
Ashworth, M.,
Frankovich, T.
(2022).
Thalassionema.
In Diatoms of North America.
Retrieved December 02, 2024, from https://diatoms.org/genera/thalassionema
Araphid
Thalassionema
Valves linear to slightly lanceolate
Sternum wide
Y-shaped silica bars span loculate areolae at valve face/mantle junction
Rimoportula "double lipped"
Colonies stellate, zigzag or fan-shaped
Frustules are elongated, straight, and rectangular in girdle view. Valves are linear to slightly lanceolate. Valve margins are smooth, or with a slightly inflated middle portion and/or slightly inflated apices. In some taxa, one apex is rounded and the other tapers slightly. The sternum is well developed, occupying nearly the entire...