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Neosynedra
Taxonomy
Neosynedra was named by Williams and Round (1986).
It was assigned to Fragilariaceae by Williams and Round (1986).
It was assigned to Fragilariaceae by Williams and Round (1986).
Synonymy list
| Year | Name and author |
|---|---|
| 1986 | Neosynedra Williams and Round |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Neosynedra Williams and Round 1986
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. Williams and F. E. Round 1986 | Valves elongate, with a slightly expanded portion at the centre and slightly capitate to rounded poles. Sternum conspicuous and well developed. Areolation of evenly spaced, uniseriate rows continuing down the valve mantle; areolae occluded by cribra on the outer surface. Apical pore fields extend onto the valve face and consist of elongate pores, separated laterally by long bars; there are intermittently spaced shorter cross-pieces which link the bars. A rimoportula is situated adjacent to the apical pore-field. Girdle of up to six bands, all incomplete and ligulate. Each band has two separate rows of areolation, one on the pars interior and one on the pars exterior; each pore is closed by a cribrum. There is no distinction between bands except for a decrease in width in the abvalvar direction. The valvocopula is identical to the other bands except that the pars interior has a simple lip to attach to the valve. |
Measurements
No measurements are available
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| Source: c = class | |||||
| Reference: Kiessling 2004 | |||||
Collections
No collection or age range data are available