Dulaiania pleurotomoides (Hoernes & Auinger 1890)

Harzhauser, Mathias, Landau, Bernard M. & Vermeij, Geerat J., 2024, The Dolicholatiridae and Fasciolariidae (Gastropoda, Buccinoidea) of the Miocene Paratethys Sea, Zootaxa 5470 (1), pp. 1-92 : 8

Dulaiania pleurotomoides (Hoernes & Auinger 1890)

Figs 2A , 3A 1 –A 2 , 4A

* 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 /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 , 3A 1 –A 2 , 4A .

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).

Figures

FIGURE 1. Measurements for shell morphology; AA: apical angle, SL: shell length, MD: maximum diameter, LWH: last whorl height, AH: aperture height, AL: aperture length, AW: aperture width, S: siphonal canal.

FIGURE 2. Protoconchs of Paratethyan Fasciolariidae. A. Dulaiania pleurotomoides (Hoernes & Auinger 1890), holotype, NHMW 1855/0043/0041. B. Aurantilaria tarbelliana (Grateloup, 1845), NHMW 1865/0001/0210, Lăpugiu de Sus (Romania). C. Polygona vindobonensis (Csepreghy-Meznerics, 1956), NHMW 2023/0350/0005, Bad Vöslau (Austria). D. Eurolatirus ornatus (d’Orbigny, 1852), NHMW 1846/0037/0257, Gainfarn (Austria). E. Tarantinaea hoernesii (Seguenza, 1875), NHMW 1853/0002/0052, Bad Vöslau (Austria). F. Snyderifusus prevosti (Hörnes, 1853), NHMW 1851/0006/0003, lectotype, Vienna/ Grinzing (Austria). G. Cryptoneolatirus bellardii (Hörnes, 1854), NHMW 1865/0001/0211, Lăpugiu de Sus (Romania). H. Neolatirus recticauda (Fuchs in Karrer, 1877), holotype, NHMW 1883/0002/4168, Rauchstallbrunn-Graben at Baden (Austria). I. Turrilatirus moravicus (Hoernes & Auinger, 1890), NHMW 1866/0001/0860e, paralectotype, Niederleis (Austria). J. Angustifusus hoessii (Naumann,1852), NHMW2023/0350/0006, BadVöslau (Austria).K. Angustifususvindobonensis (Hoernes & Auinger, 1890), NHMW 2023/0338/0020, Lăpugiu de Sus (Romania). L. Fraudifusinus pseudocrispoides nov. sp., NHMW 1868/0001/0462, paratype, Lăpugiu de Sus (Romania). M. Fraudifusinus crispoides (Kittl, 1887), NHMW 2023/0350/0013, Bad Vöslau (Austria). N. Pseudofusus rostratoides nov. sp., NHMW 1864/0001/0204, paratype, Gainfarn (Austria). O. Pseudofusus balteus nov. sp., NHMW 2023/0370/0001, holotype, Letkés (Hungary). P. Pseudofusus stahlschmidti nov. sp., NHMW 1846/0037/0264, holotype, Baden (Austria). Q. Pseudolatirus bilineatus (Naumann, 1852), NHMW 2023/0338/0022, Lăpugiu de Sus (Romania). R. Takashius vinculum nov. sp., NHMW 2023/0348/0008, paratype, Steinebrunn (Austria). S. Takashius boettgeri (Kovács, 2022), NHMW 2023/0338/0023, Lăpugiu de Sus (Romania).

FIGURE 3. A1–A2. Dulaiania pleurotomoides (Hoernes & Auinger 1890), holotype, NHMW 1855/0043/0041.

FIGURE4.Columellar featuresof ParatethyanFasciolariidae.A.Dulaianiapleurotomoides(Hoernes&Auinger1890),holotype, NHMW 1855/0043/0041. B. Polygona vindobonensis (Csepreghy-Meznerics, 1956), NHMW 1860/001/0245, Steinebrunn (Austria). C. Eurolatirus ornatus (d’Orbigny, 1852), NHMW 2023/0351/0004, Enzesfeld (Austria). D. Tarantinaea hoernesii (Seguenza, 1875), NHMW 1846/0037/0279, lectotype, Steinebrunn (Austria). E. Neolatirus recticauda (Fuchs in Karrer, 1877), holotype, NHMW 1883/0002/4168, Rauchstallbrunn-Graben at Baden (Austria). F. Cryptoneolatirus bellardii (Hörnes, 1854), NHMW 1865/0001/0211, Lăpugiu de Sus (Romania). G. Turrilatirus moravicus (Hoernes & Auinger, 1890), NHMW 1866/0001/0860e, paralectotype, Niederleis (Austria). H. Angustifusus hoessii (Naumann, 1852), NHMW 2023/0367/0002, Baden-Sooss (Austria). I. Angustifusus vindobonensis (Hoernes & Auinger, 1890), NHMW 1846/0037/0262a. J. Fraudifusinus crispoides (Kittl, 1887), NHMW 2023/0350/0009, Bad Vöslau (Austria). K. Fraudifusinus crispoides (Kittl, 1887), NHMW 2023/0350/0010, Bad Vöslau (Austria). L. Fraudifusinus pseudocrispoides nov. sp., NHMW 1870/0033/0102, paratype, Lăpugiu de Sus (Romania). M. Fraudifusinus grundensis nov. sp., NHMW 1855/0045/0720b, holotype, Grund (Austria). N. Pseudolatirus bilineatus (Naumann, 1852), NHMW 1846/0037/0264e, neotype, Möllersdorf (Austria). O. Takashius boettgeri (Kovács, 2022), NHMWA1426, Lăpugiu de Sus (Romania). P. Takashius vinculum nov. sp., NHMW 1868/0001/0083, paratype, Möllersdorf (Austria).