Parodontella ruthenica (Witt) D. M. Williams & P.A. Sims, 2018
publication ID |
https://doi.org/ 10.11646/phytotaxa.382.1.1 |
persistent identifier |
https://treatment.plazi.org/id/12590703-F410-FF9B-22DC-FF59FA8025F1 |
treatment provided by |
Felipe |
scientific name |
Parodontella ruthenica (Witt) D. M. Williams & P.A. Sims |
status |
comb. nov. |
Parodontella ruthenica (Witt) D. M. Williams & P.A. Sims , comb. nov. ( Figs 36–43 View FIGURES 36–43 )
Basionym:— Biddulphia ruthenica Witt (1885: 158 , pl. 9, figs 9, 10)
Synonym:— Denticella ruthenica (Witt) De Toni (1894: 885)
Type:— Simbirsk ( Witt 1885)
Valves broadly lanceolate with narrow outwardly directed elevations at apices and several long, hollow, curved spines on valve face, exterior openings of rimoportulae ( Figs 36, 38, 42 View FIGURES 36–43 ); length 80–225μm, breadth 30–105μm; striae on exterior c. 14 in 10μm. Valve face lanceolate bordered by well-developed marginal ridge of spines fused at base separating valve face from deep slightly expanded mantle ( Figs 36–38 View FIGURES 36–43 ). Summits of elevations with small rounded hyaline area on proximal face, ocellus on distal face ( Fig. 41 View FIGURES 36–43 ).Areolae loculate with internal foramina ( Fig. 40 View FIGURES 36–43 ), exterior with bi- or tri-seriate rows of fine pores ( Fig. 37 View FIGURES 36–43 ). On mantle fine pores lie within rectangular areas bordered by slightly raised longitudinal costae with transverse bars ( Fig. 37 View FIGURES 36–43 ). On valve face in bi-seriate transapical lines meeting central sternum ( Fig. 37 View FIGURES 36–43 , arrow). Spinules on valve face and elevations ( Figs 36–38 View FIGURES 36–43 ). Rimoportulae 4–11 ( Fig. 39 View FIGURES 36–43 ), opening to exterior through long curved spines lying just within marginal ridge ( Fig. 38 View FIGURES 36–43 ), on interior each opening through a transverse slit across a papillus ( Fig. 40 View FIGURES 36–43 ).
Observations:— The description above is based on material from Moreno, California, USA ( BM).
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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Genus |
Parodontella ruthenica (Witt) D. M. Williams & P.A. Sims
Sims, Pat A., Williams, David M. & Ashworth, Matt 2018 |
Denticella ruthenica (Witt)
De Toni 1894: 885 |
Biddulphia ruthenica
Witt 1885 |