Diatoms of North AmericaDiatoms of North America
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Guide to Encyonema latum

Krammer 1997

E Latum Guide
Credit: Friedel Hinz
  1. Ventral margin very slightly expanded
  2. Valve apicies rounded
  3. Central, dorsal striae 6-8 in 10 µm
  4. Dorsal areolae closest to the central area oval, becoming lineolate

The species was described from the Miocene lacustrine diatomites of Terrebonne, Oregon (Krammer 1997). Valves are strongly dorsi-ventral. The dorsal margin is broadly arched, while the ventral margin is only very slightly expanded. The valve apices are rounded. The axial area is relatively broad in the central part, narrowing at the valve ends.