Valves slightly dorsiventral, almost naviculoid
, lanceolate with convex dorsal and ventral margins and capitated ends.
(2001) determined that nanoplankton (primarily phytoflagellates, coccolithophorids, and naviculoid
diatoms) contributed most to total phytoplankton abundance and was especially dominant in winter months.
Pennate diatoms that could not be identified to species at 400x were identified as naviculoids
. To determine relative abundances of pennate species, permanent mounts were made with Hyrax mounting medium from a cleaned (Carr et al.