Bishop, I.
(2017).
Odontidium.
In Diatoms of North America.
Retrieved November 17, 2025, from https://diatoms.org/genera/odontidium
Araphid
Odontidium
Sternum distinct
Transapical ribs heavily silicified
Spines simple
Girdle structure complex
Rimoportula present
Frustules of Odontidium have heavily silicified transapical ribs that extend internally from the valve face. The sternum is distinct, and may be relatively broad, or may be narrow. Spines are simple and located at the valve face/mantle boundary. Spines are considered non-functional. Girdle band structure is complex, with many alternating...
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