Granulatocincta nataliae ( Hoernes & Auinger, 1891 ) Harzhauser & Landau & Janssen, 2022

Harzhauser, Mathias, Landau, Bernard & Janssen, Ronald, 2022, The Clavatulidae (Gastropoda, Conoidea) of the Miocene Paratethys Sea with considerations on fossil and extant Clavatulidae genera, Zootaxa 5123 (1), pp. 1-172 : 54

Granulatocincta nataliae ( Hoernes & Auinger, 1891) nov. comb.

Figs 17J 1 –J 3, 3W , 5 , 6

Clavatula Nataliae —Hoernes 1891: 129 [nomen nudum].

* Pleurotoma (Clavatula) Nataliae nov. form.— Hoernes & Auinger 1891: 338, pl. 43, figs 1a–b.

Type material. Holotype: NHMW 1855 /0035/0021, Belgrade / Rakovica ( Serbia), SL: 25.7 mm, MD: 10.1 mm, illustrated in Hoernes & Auinger (1891, pl. 43, figs 1a–b), figs 17J 1 –J 3, 3W.

Revised description. Shell medium-sized, solid, moderately broad fusiform with high spire composed of flat-sided whorls and weakly coeloconoid early teleoconch; apical angle ~35°. Protoconch not preserved. Earliest teleoconch whorls flat-sided with tripartite sculpture, three spiral cords of close-set beads enlarging abapically. On fourth whorl subsutural beads become coalescent, mid-whorl row well-defined, suprasutural beads become bifid by intercalation of narrow spiral groove. Pointed tubercles develop on subsutural collar; comma-shaped axial riblets at mid-whorl, with prominently beaded cord mid riblet, suprasutural beads weaken and become bifid by intercalation of narrow spiral groove. Suture narrowly impressed, linear. Last whorl 55% of total height. Subsutural collar moderately narrow, poorly delimited, bearing small pointed tubercles mid-collar, subsutural ramp at mid-width, with prominent row of beads placed mid-ramp. Shoulder delimited by broad, weakly beaded trifid cord, convex below, weakly constricted at base. Siphonal fasciole short, rounded, twisted with prominent growth increments. Sculpture of broad trifid shoulder cord, below seven weakly to moderately beaded cords of primary strength separated by narrow grooves, narrowing towards fasciole. Aperture moderately wide, pyriform. Outer lip not thickened, with six prominent lirae, extending deeply within aperture. Anal sinus moderately wide and deep, symmetrically U-shaped, with apex coinciding with central beaded cord. Siphonal canal short, straight. Columella strongly excavated in upper third, straight below, weakly twisted, smooth. Columellar and parietal callus moderately thickened, adherent, forming relatively broad callus rim.

Discussion. Granulatocincta nataliae ( Hoernes & Auinger, 1891) is characterized by its sculpture of pointed tubercles on the subsutural collar, relatively regular beaded cords on the last whorl, and most importantly the prominent central beaded cord. Early teleoconch sculpture and general sculpture type are reminiscent of Granulatocincta callim nov. sp., but G. callim differs in its comparatively blunt beads, the buccinoid outline and the absence of lirae inside the outer lip. We are not aware of any other comparable species.

Paleoenvironment. Inner neritic with sea grass meadows ( Jovanović et al. 2020).

Distribution in Central Paratethys. Badenian (middle Miocene): Pannonian Basin: Belgrade /Rakovica ( Serbia) ( Hoernes & Auinger 1891).

Figures

FIGURE 1. A. Map of central and south–eastern Europe, representing the area that was partly covered by the Central Paratethys Sea. The white insert corresponds to the area that is restored in the palaeogeographic map below. B. Paleogeography of the Middle Miocene Paratethys Sea showing the most important sedimentary basins (NAFB: North Alpine Foreland Basin, E.-Sopr B: Eisenstadt–Sopron Basin).

FIGURE 3. Early teleoconch whorls of extant and fossil Clavatulidae species. A. Clavatula regia (Röding, 1798), NHMW 1683 6/28, West Africa. B. Clavatula rubrifasciata (Reeve, 1845), NHMW 10203, Gorée (Senegal). C. ‘Clavatula’ diadema (Kiener, 1839), NHMW 1884/0010/0023, Gorée (Senegal). D. ‘Clavatula’ mystica (Reeve, 1843), MNHN-IM-2013-59897, Est de l'ile de Gorée (Senegal). E. ‘Clavatula’ bimarginata (Lamarck, 1822), MNHN-IM-2013-43369, Dakar (Senegal). F. ‘Clavatula’ pyramidata (Kiener, 1839), MNHN-IM-2009-24982, Baie de Pointe-Noire (Republique du Congo). G. Clavatula sorini nov. sp., paratype, NHMW 1874/0025/0046, Lăpugiu de Sus (Romania). H. ‘Clavatula’ romana (Defrance, 1826), NHMW 1999/0098/0004, Modra-Kráľová (Slovakia). I. ‘Clavatula’ interrupta (Brocchi, 1814), NHMW 1861/0033/0420, Buituri (Romania). J. ‘Clavatula’ hirmetzli Kovács & Vicián, 2021, NHMW 1868/0001/0069, Baden-Sooss (Austria). K. ‘Clavatula’ irisae nov. sp., NHMW 2021/0126/0001, holotype, Gainfarn (Austria). L. ‘Clavatula’ sophiae (Hoernes & Auinger, 1891), lectotype, NHMW 2021/0127/0001, Enzesfeld (Austria). M. ‘Clavatula’ veronicae (Hoernes &Auinger, 1891), NHMW 1855/0043/0044b, Lăpugiu de Sus (Romania). N. ‘Clavatula’ santhai Kovács & Vicián, 2021, holotype, HNHM, PAL 2021.20.1, Letkés (Hungary).O. ‘Clavatula’ camillae (Hoernes &Auinger, 1891), lectotype, NHMW 1949/0005/0042, Lăpugiu de Sus (Romania). P. Megaclavatula amaliae (Hoernes & Auinger, 1891), lectotype, NHMW 1949/0005/0049, Lăpugiu de Sus (Romania). Q. Megaclavatula grunerti nov. sp., paratype, NHMW 2021/0127/0003, Enzesfeld (Austria). R. Megaclavatula laevigata (Eichwald, 1830), NHMW 1853/0038/0035a, Korytnica (Poland). S. Megaclavatula pilleri nov. sp., holotype, NHMW 1949/0005/0051a, Baden-Sooss (Austria). T. Megaclavatula polonica (Pusch, 1837), NHMW 1862/0001/0324, Bad Vöslau (Austria).U. Granulatocincta angelae (Hoernes &Auinger, 1891), paralectotype, NHMW 1949/0005/0099, Möllersdorf (Austria). V. Granulatocincta granulatocincta (Münster in Goldfuss, 1841), NHMW 1846/0028/0009, Enzesfeld (Austria). W. Granulatocincta nataliae (Hoernes & Auinger, 1891), NHMW 1855/0035/0021, holotype, Belgrade/Rakovica (Serbia). X. Granulatocincta schreibersi (Hörnes, 1854), paralectotype, NHMW1997z0178/1133, Bad Vöslau (Austria).Y. Granulatocincta callim nov. sp., paratype, NHMW 2021/0128/0001, Bad Sauerbrunn (Austria). Z. Granulatocincta contorta (Švagrovský, 1958), holotype, SNMB Z 3076, Kuzmice (Slovakia), Aa. Granulatocincta theoderichi nov. sp., paratype, NHMW 2016/0026/0320b, Ritzing (Austria). Ab. Olegia doderleini (Hörnes, 1854), paralectotype, NHMW 1858/0015/0147, Wiesen (Austria). Ac. Olegia mandici nov. sp., paratype, NHMW 1872/0031/0008a, Bekića vrelo, Čremušnica at Donji Kirin (Croatia). Ae. Olegia dorotheae (Hoernes & Auinger, 1891), paralectotype, NHMW 1949/0005/0040, Kleinebersdorf (Austria). Scale bar is 5 mm for all specimens except for Granulatocincta contorta, Olegia doderleini and O. mandici.

FIGURE 5. Anal sinus morphology of Paratethyan Clavatulidae.

FIGURE 6. Apertures of Paratethyan Clavatulidae (C. = Clavatula, ‘C.’ = ‘Clavatula’, G. = Granulatocincta, M. = Megaclavaltula, O. = Olegia).

FIGURE 17 A1–A3. Granulatocincta callim nov. sp., holotype, NHMW 1866/0001/0549, Wiesen (Austria). B1–B3. Granulatocincta callim nov.sp.,paralectotype,NHMW 1846/0037/0351b, Wiesen (Austria).C1–C3. Granulatocincta callim nov. sp., paralectotype, NHMW 1846/0037/0351, Wiesen (Austria). D1–D2. Granulatocincta callim nov. sp., paralectotype, NHMW 2021/0128/0001, Bad Sauerbrunn (Austria). E. Granulatocincta carasiensis (Jekelius, 1944), MNG P– 4965, Soceni (Romania). F1–F2. Granulatocincta contorta (Švagrovský, 1958), holotype, Z 3076, Kuzmice (Slovakia). G1–G2. Granulatocincta contorta (Švagrovský, 1958), paratype, SNMB Z 3074, Kuzmice (Slovakia). H1–H3. Granulatocincta pelliscrocodili nov. sp., holotype, RGM 776 907, Gödet Creek near Tilkikaya (Turkey). I1–I2. Granulatocincta pelliscrocodili nov. sp., paratype, RGM 776 906, southwest bank of Gödet Creek near Tilkikaya (Turkey). J1–J3. Granulatocincta nataliae (Hoernes & Auinger, 1891), holotype, NHMW 1855/0035/0021, Belgrade/Rakovica (Serbia).