Zygoceros ehrenbergii Sar
publication ID |
https://doi.org/ 10.11646/phytotaxa.382.1.1 |
persistent identifier |
https://treatment.plazi.org/id/12590703-F40F-FF84-22DC-FA75FF4D2071 |
treatment provided by |
Felipe |
scientific name |
Zygoceros ehrenbergii Sar |
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Zygoceros ehrenbergii Sar (in Lavigne et al. 2016: 328) ( Figs 72–75 View FIGURES 72–75 )
Synonyms:— Denticella rhombus Ehrenberg (1844b: 79) Odontella rhombus (Ehrenberg) Kütz. (1849:136)
Type:— Petersburg, Virginia, 231208-e BHUPM = Sar et al. 2007: fig. 4, reproduced here as Fig. 73 View FIGURES 72–75 , lectotype.
Valve outline broadly lanceolate, valve face convex with elevation at apices ( Fig. 72 View FIGURES 72–75 ), length 48–105um, breadth 25–55μm, mantle depth up to 18μm. Elevations 7–12μm high (measured from valve face), slanting outwards but not beyond extended valve margin, ocellus on summit. Valve structure loculate, valve surface covered in solid spines ( Figs 73–75 View FIGURES 72–75 ). Loculi arranged in rows radiating from narrowly lanceolate annulus ( Fig. 75 View FIGURES 72–75 ), rarely an apical central line ( Fig. 74 View FIGURES 72–75 ), with 8 areolae in each row and 10 rows in 10μm. Valve centre mostly with annulus, often within hyaline border, areolae within mostly irregular and apically aligned. Rimoportulae mostly 4–6, rarely 3 or 7, positioned submarginally opening through thick, long, hollow spines (see Andrews 1980: 25, pl. 1, figs 6, 7; pl. 4, figs 2, 3).
Observations:— The above description is based on material from Petersburg, Virginia, fossil ( BM Adams A. 486).
BHUPM |
Museum für Naturkunde Berlin |
BM |
Bristol Museum |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Zygoceros ehrenbergii Sar
Sims, Pat A., Williams, David M. & Ashworth, Matt 2018 |
Zygoceros ehrenbergii
Lavigne, A. S. & Sunesen, I. & Sar, E. A. 2016: 328 |