Dulaiania pleurotomoides (Hoernes & Auinger 1890)
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publication ID |
https://doi.org/ 10.11646/zootaxa.5470.1.1 |
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publication LSID |
lsid:zoobank.org:pub:6A4270C2-D3F9-404F-91E7-4A73F2A99AE4 |
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persistent identifier |
https://treatment.plazi.org/id/36508782-FFC7-DB28-3288-74CA0BA3FB61 |
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treatment provided by |
Plazi |
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scientific name |
Dulaiania pleurotomoides (Hoernes & Auinger 1890) |
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Dulaiania pleurotomoides (Hoernes & Auinger 1890)
Figs 2A View FIGURE 2 , 3A View FIGURE 3 1 –A View FIGURE 1 2 View FIGURE 2 , 4A View FIGURE4
* Fasciolaria pleurotomoides nov. form.—Hoernes & Auinger 1890: 265, pl. 22, figs 7a–b.
Lathyrus pleurotomoides (Hö. Au.) — Boettger 1906: 49.
Polygona? pleurotomoides (Hoernes & Auinger, 1890) — Landau et al. 2013: 200.
Type material. Holotype, NHMW 1855 View Materials /0043/0041, SL: 22.5 mm, MD: 9.9 mm, Lăpugiu de Sus ( Romania), illustrated in Hoernes & Auinger (1890: pl. 22, fig. 7), Figs 2A View FIGURE 2 , 3A View FIGURE 3 1 –A View FIGURE 1 2 View FIGURE 2 , 4A View FIGURE4 .
Revised description. Small, moderately broad fusiform shell of eight teleoconch whorls, with high conical to weakly coeloconoid spire; apical angle 32°. Protoconch low, dome shaped, of two convex whorls, diameter 900 μm, height 600 μm. Early teleoconch whorls flat-sided with three prominent spiral cords separated by slightly narrower interspaces. Later whorls weakly convex with deeply incised suture. Delicate spiral cord intercalated in interspaces between primary cords on third teleoconch whorl. Mid-whorl cord forming weak shoulder angulation around fifth whorl. Simultaneously adapical spiral cord weakens, resulting in widening subsutural ramp with two delicate secondary spiral cords. Axial sculpture restricted to subobsolete ribs and scabrous growth lines between spiral cords on subsutural ramp on last two whorls. Last whorl attaining about 61% of total height, with broad, concave subsutural ramp, weakly shouldered, convex below, strongly constricted base, bearing about 11 prominent spiral cords with slightly weaker secondaries intercalated on last whorl and base, overrunning 15 very weak to subobsolete axial ribs. Spiral sculpture somewhat irregular, cut by strong growth lines, and undulating at intersections over weak axial ribs on base. Fasciole indistinct with weak spiral cords. Aperture moderately wide, pyriform. Columella moderately excavated mid-height, transition to siphonal canal weakly angled. Columellar callus thin, indistinct. Columella bearing three folds, not visible on apertural view, but when aperture slightly rotated forward; very weak parietal denticle.Anal canal weakly incised. Outer lip thin.About eight lirae starting some distance behind peristome, extending deep within aperture. Siphonal canal moderately short, wide, deflected to the left.
Discussion. We are not aware of any comparable species.
Paleoenvironment. Unknown.
Distribution in Central Paratethys. Badenian (Middle Miocene): Făget Basin: Lăpugiu de Sus ( Romania) (Hoernes & Auinger 1890).
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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.
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Dulaiania pleurotomoides (Hoernes & Auinger 1890)
| Harzhauser, Mathias, Landau, Bernard M. & Vermeij, Geerat J. 2024 |
Polygona? pleurotomoides (Hoernes & Auinger, 1890)
| Landau, B. M. & Harzhauser, M. & Yslamodlu, Y. & Marques da Silva, C. 2013: 200 |
Lathyrus pleurotomoides (Hö. Au.)
| Boettger, O. 1906: 49 |