Nitidiscala browni, Harzhauser & Landau, 2025
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publication ID |
https://doi.org/10.11646/zootaxa.5630.1.1 |
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publication LSID |
lsid:zoobank.org:pub:89462472-D932-4255-880F-C6EF15220A31 |
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persistent identifier |
https://treatment.plazi.org/id/03D787A4-FF84-FF85-FF3F-FF2EFEA99299 |
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treatment provided by |
Plazi |
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scientific name |
Nitidiscala browni |
| status |
sp. nov. |
Nitidiscala browni sp. nov.
Figs 4K View FIGURE 4 , 33J View FIGURE 33 , 37D View FIGURE 37 1 –D View FIGURE 1 2 View FIGURE 2
Type material. Holotype, NHMW 2024 View Materials /0283/0002d, SL: 2.2 mm, MD: 1.0 mm, Lăpugiu de Sus ( Romania), Figs 4K View FIGURE 4 , 33J View FIGURE 33 , 37D View FIGURE 37 1 –D View FIGURE 1 2 View FIGURE 2 .
Type locality. Lăpugiu de Sus ( Romania), Făget Basin .
Type stratum. Dej Formation.
Age. Middle Miocene, Badenian (Langhian).
Etymology. In honor of Leonard G. Brown (Connecticut, USA), in recognition of its contributions on Epitoniidae systematics.
Diagnosis. Very small, moderately broad, stocky conical, slightly gradate, weakly coronate, deeply impressed suture, relatively large last whorl with about ten thin, strongly raised lamellae partly obliquely aligned axially, fused across suture, with low trigonal spines developed at shoulder, ovate aperture with strongly thickened peristome.
Description. Shell very small, moderately broad, stocky conical (apical angle ~35°), slightly gradate, weakly coronate. Protoconch high conical, of 3.5 smooth, weakly convex whorls. Teleoconch of up to five whorls. Early teleoconch whorl convex with periphery placed above mid-whorl. Later whorls with broad, weakly concave subsutural ramp, shoulder angulation weakly convex to subcylindrical periphery. Suture deeply impressed. Sculpture of moderately close-set, strongly raised, weakly prosocline, thin but robust lamellae, partly obliquely aligned axially (13: 12: 10), raised adapical tip fused across suture. Lamellae forming low trigonal spines on last whorl, crests of lamellae moderately rolled over. Interspaces between lamellae smooth, glossy. Last whorl large, convex, attaining about ~52% of total height, lamellae persisting over base, strongly rolled over, base sub-angled, no peribasal cord, base narrow, flattened. Aperture ovate, columella weakly concave. Fasciole short, broad, with prominent growth lines. Columellar callus forming narrow rim, attached to fasciole, parietal callus delicate. Peristome strongly thickened, glossy, duplex with inner layer covering outer layer largely. No umbilicus.
Discussion. Nitidiscala frondicula ( Wood, 1842) of Chirli 2009: pl. 11, figs 13–18) is larger and differs in its wider subsutural ramp. Nitidiscala bonfittoi sp. nov. from the Middle Miocene of the Paratethys and the Pliocene Mediterranean Nitidiscala pultoastensis ( Sacco, 1891) lack a shoulder (see Sacco 1891: pl. 1, fig. 30; Ferrero Mortara et al. 1984: pl. 5, fig. 9).
Paleoenvironment. Unknown.
Distribution in Central Paratethys. Badenian (Middle Miocene): Făget Basin: Lăpugiu de Sus ( Romania) (hoc opus).
| MD |
Museum Donaueschingen |
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.