Observaciones de karolinabrylka

scale bar 10 μm
valves arcuate; dorsal margin concave, ventral convex; apices rounded, slightly deflected dorsally; striae punctate; costae every two striae; raphe on the ventral margin, raches towards dorsal margin in the valve center (triangular pattern on the valve face)
third line of pictures: girdle view of the dorsal margin

scale bar 10 μm
valves elongate, linear, narrow; apices rounded; narrow central sternum; in some spices central ghost striae; rimoportuale on each apex (black dot visible on pictures);valve mantle visible on fourth picture

scale bar 10 μm
valves arcuate; dorsal margin convex, ventral concave; valves taper towards apices; apices rounded; striae spaced evenly, areoale not visible in LM; raphe on ventral side (arrow); raphe cures on valve face (dark points on apices)

scale bar 10 μm
valves subcircular, saddle shaped frustules; monoraphid diatom: first line of pictures raphe valve; second line rapheless valve; apices slightly pointed; raphe simple, linear, sometimes hardly visible in LM (second picture in first line); raphe valve bears hyaline area on valve margin; areolae on the rapheless valve transapically elongate (visible on pictures)

scale bar 10um
valves elliptic, apices apiculate, large central area; central area maculose; straiae puntate.
one specimen in 10 different focuses
"top" valve-first line
"bottom" valve-second line
irregular shape-fractures on bottom valve

scale bar 10 μm
valves large, asymmetric on transapical axis; headpole capitate; stigma on central area; apical porefield present on footpole, visible in LM; uniseriate straiae, visible in LM; distal ends of raphe deflected

scale bar 10 μm
valves dorsi-ventral, apices rounded; dorsal margin arched, ventral slightly concave with slightly convex central part; large stigma present in central area; striae punctate; easily observed in LM; raphe undulate, proximal ends curved toward ventral margin, distal ends dorsally deflected.

scale bar 10 μm
valves elliptical-clavate, headpole slightly rostrate, footpole rounded; axial area broad, raphe undulate; central area bears stigma, striae shortened on both side of central area; striae punctated.

scale bar 10 μm
Valves lancelote, wide center, dense transapical striae. Raphe straight, proximal ends straight or slightly hooked, distal ends hooked in the same direction. Central area narrow, slightly concave.

scale bar 10 μm
valves discoid, central area convex or concave, areolae arranged in uniseriate rows in central part of valve face and become fasciculate towards margin. Fascicles separated by costae.
Ring of spines on margin of the valve face, a small fultoportula is positioned below each spine and above the valve margin. Labiate processes located in a ring outside ring of spines

scale bar 10 μm
valves dorsiventral, lanceolate, both dorsal and ventral margin convex. ends apiculate, slightly displaced to the ventral side.
Raphe lateral, proximal ends deflect towards dorsal side, terminal ends deflect to the ventral side.
Striae punctate, areolae very coarse.

scale bar 10 μm
valves: semi to slightly lanceolate, dorsal margin strongly convex, ventral straight to slightly convex. Ends slightly displaced to the ventral side.
Central area simple, raphe simple, proximal ends curved slightly towards dorsal margin, distal ends towards ventral one. Distal ends don't reach valve margine.
Stria punctate.