Pusionella hofmanni, Harzhauser & Landau & Janssen, 2022
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publication ID |
https://doi.org/ 10.11646/zootaxa.5123.1.1 |
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publication LSID |
lsid:zoobank.org:pub:036F6B4D-CDCC-4CD7-A914-9A1D8C7A097A |
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DOI |
https://doi.org/10.5281/zenodo.6399851 |
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persistent identifier |
https://treatment.plazi.org/id/039487D1-FF0B-FF22-FFBA-FA9168AEFC65 |
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treatment provided by |
Plazi |
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scientific name |
Pusionella hofmanni |
| status |
sp. nov. |
Pusionella hofmanni View in CoL nov. sp.
Figs 41E View FIGURE 41 1 –E View FIGURE 1 2 View FIGURE 2 , F 1 –F View FIGURE 1 2 View FIGURE 2 , G 1 –G View FIGURE 1 2 View FIGURE 2 , 4K View FIGURE 4 , 5 View FIGURE 5 , 7 View FIGURE 7
Type material. Holotype: NHMW 1867 View Materials /0019/0136, SL: 44.0 mm, MD: 14.1 mm, Coşteiu de Sus ( Romania), figs 401E 1 –E 2, 4K . Paratypes: NHMW 1867 View Materials /0019/0142a, SL: 33.8 mm , MD: 12.1 mm, Coşteiu de Sus ( Romania) , figs 41F 1 –F 2; NHMW 1867 View Materials /0019/0142b, SL: 30.1 mm , MD: 11.0 mm, Coşteiu de Sus ( Romania) , figs 41G 1 –G 2; NHMW 1867 View Materials /0019/0142, 4 spec., Coşteiu de Sus ( Romania) .
Type locality. Coşteiu de Sus ( Romania), Făget Basin .
Type stratum. Silt and clay of the Dej Formation.
Age. Middle Miocene, early/middle Badenian (Langhian).
Etymology. In honor of Thomas Hofmann (Geological Survey of Austria, Vienna), geologist, great popularizer of science and friend of the first author.
Diagnosis. Medium-sized, fusiform with high, weakly gradate spire, subcylindrical whorls with rounded shoulder and convex base. Early teleoconch whorls with deep spiral groove; siphonal canal with strongly raised spiral cord.
Description. Shell medium-sized, moderately broad fusiform with high, weakly gradate spire; apical angle ~38°. Protoconch not preserved. Teleoconch of 12 whorls. Early teleoconch whorls weakly concave, with weak, smooth subsutural spiral cord and suprasutural row of large beads, separated by deeply incised spiral groove. On third to fourth whorl suprasutural beads fade, deep groove separates narrower slightly concave subsutural cord from wider abapical portion of whorl. Spiral groove shifting slightly in abapical direction on subsequent whorls, becoming subobsolete on eighth whorl. Late whorls smooth, subcylindrical. Suture weakly impressed, linear. Last whorl 56– 60% of total height, subcylindrical. Subsutural collar, ramp and shoulder not developed. Rounded and moderately constricted at base. Siphonal fasciole strongly delimited by raised ridge, flattened, twisted, with prominent growth lines. Sculpture of weak, narrow cords restricted to base and fasciole.Aperture moderately wide, pyriform. Outer lip thin, smooth within. Anal sinus very shallow, wide; siphonal canal moderately short, strongly deflected to left and dorsally, shallowly notched at tip. Columella weakly twisted, smooth. Columella excavated in upper third, strongly twisted at fasciole. Columellar and parietal callus thin, poorly delimited from base.
Discussion. Pusionella hofmanni nov. sp. is morphologically close to P. palatina Strausz, 1954 , but in P. palatina the early whorls are coeloconoid, with the beads at the abapical suture persisting to the sixth whorl. In P. hofmanni the early whorl profile is regularly conical and broader, the whorls more depressed and the beads fade by the fourth whorl.
In addition, Pusionella hofmanni differs in the generally less conical, but slightly gradate spire, the deeper spiral groove on early spire whorls, and the shallowly notched and less deflected siphonal canal. The extant Pusionella ghanaensis Boyer & Ryall, 2006 develops a similar spiral groove on early spire whorls, but differs from P. hofmanni in having spiral cords on the last whorl. Pusionella pseudofusus ( Des Moulins, 1842) , from the Burdigalian of France, and P. tauronifat Sacco, 1891 and P. pedemontana Sacco, 1891 , from the Burdigalian of Italy, all lack a spiral groove on early teleoconch whorls (see Peyrot 1931: 103, pl. 9, figs 74–76; Sacco 1904: 62, pl. 2, fig. 77; Ferrero Mortara et al. 1984: 66, pl. 56, fig. 14).
Paleoenvironment. Unknown.
Distribution in Central Paratethys. Badenian (middle Miocene): Făget Basin: Coşteiu 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.