diatomjohnson's Identifications
Photos / Sounds
What
Staurosira binodisObserver
gosiamahoneyDescription
Constricted central margin. Rostrate to subcapitate ends. The axial area is broad and slightly lanceolate.
Photos / Sounds
What
Staurosirella martyiObserver
khatcherDescription
Scale bar = 10 µm
Coarse striae characteristic of this species as well as the small size.
Photos / Sounds
Observer
ebroadmanDescription
Scale bar = 10 µm
Valves are biundulate. The axial area is wide; sometimes nearly as wide as the central constriction. Differentiated from the similar Staurosira contruens var. binodis based on striae characteristics and valve size.
Photos / Sounds
Observer
gosiamahoneyDescription
Scale bar = 10 µm.
Disc-shaped large valves, concentrically undulate with a convex, or concave, valve face. Large radial subhexagonal areolae. Biseriate fascicles on valve margin, separated by costae. Spines at the ends of every two to three costae just inside the valve face margin.
Same specimen on photo 2 and 3.
Photos / Sounds
What
Staurosira binodisObserver
gosiamahoneyDescription
Constricted central margin. Rostrate to subcapitate ends. The axial area is broad and slightly lanceolate.
Photos / Sounds
Observer
gosiamahoneyDescription
Scale bar = 10 µm.
Undulate valve face. Distinct central area isolated from the marginal striae and costae. 1 fultoportulae in central area.
Photos / Sounds
What
Stauroneis gracilisObserver
gosiamahoneyDescription
Scale bar = 10 µm.
Elliptic-lanceolate valves. Apices subrostrate and broadly rounded. Proximal raphe ends curved and expanded.Terminal raphe fissures shaped like question marks. Stauros rectangular widening slightly towards valve margins.
Photos / Sounds
What
Meridion circulareObserver
gosiamahoneyDescription
Scale bar = 10 µm.
Valves linear-clavate, asymmetric to the transapical axis. Costae present running transversely across the valves. Narrow sternum extends the length of the valve. Variable size.
Photos / Sounds
What
Genus GomphonemaObserver
kjsolomon89Description
Scale bar = 10µm
Specimens match measurements for sp.40 SESQA from Bishop et al. 2017. Bishop et. al has sp.40 SESQA as measuring Length = 36.5-47.5; W= 7-8; Striae at center =10-11.
Valves somewhat asymmetrical on the apical axis. Has one puncum in central area. Apex and base about the same size. Striae are radiate near base and central, but parallel at the apex. Differs from G. manubrium in that valve centers are not as inflated.
Stats
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