Spaulding, S.,
Edlund, M.,
Morales, E.,
Metzeltin, D.
(2009).
Cavinula.
In Diatoms of North America.
Retrieved May 01, 2026, from https://diatoms.org/genera/cavinula?x-craft-preview=409442409a997390693ff24c7010fd6f1c96fb56f8f091fa016a63de9a54aaccecpiqubknd
Symmetric Biraphid
Cavinula
Valves linear-lanceolate to nearly circular
Striae uniseriate
Striae radial
Terminal raphe fissures absent
Valves are characterized by uniseriate, radial striae composed of round to elongate areolae. Valves are linear-lanceolate to nearly circular in outline. Externally, the proximal raphe ends are expanded, while the internal proximal raphe ends are straight. Terminal raphe fissures are absent. Internally, the central sternum is thickened....