Auingeria grussbachensis ( Csepreghy-Meznerics, 1969 )

Harzhauser, Mathias & Landau, Bernard M., 2021, The Columbellidae (Gastropoda, Buccinoidea) in the Miocene Paratethys Sea — striking diversity of a negelected group, Zootaxa 5025 (1), pp. 1-75: 51-53

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Auingeria grussbachensis ( Csepreghy-Meznerics, 1969 )


Auingeria grussbachensis ( Csepreghy-Meznerics, 1969)  

Figs 4R, 15E 1 –E 2, F 1 –F 2, G 1 –G 2

[ Columbella (Anachis) Bellardii M. Hoernes   ] Varietät B— Hoernes & Auinger 1880: 100, pl. 11, fig. 25.

[ Columbella (Anachis) Bellardii M. Hoernes   ] Varietät C— Hoernes & Auinger 1880: 100, pl. 11, figs 26–27.

Columbella (Anachis) bellardii Hörnes, 1856   — Strausz 1966: 297 (pars), pl. 34, figs 13–17 [non Auingeria bellardii (Hörnes, 1852)   ].

* Pyrene (Anachis) bellardii grussbachensis   n. ssp. — Csepreghy-Meznerics 1969: 83, pl. 4, figs. 1, 5.

Pyrene (Anachis) bellardii grussbachensis Csepreghy-Meznerics, 1969   — Palfy et al. 2008: 109.

Type material. Lectotype (designated herein): M.70.504, Gyükerfő , Balaton ( Hungary), illustrated in Csepreghy- Meznerics (1969, pl. 4, figs. 1, 5)   . Paralectotype: M.70.503, Gyükerfői-dombok , Balaton ( Hungary)   .

Additional material. NHMW 1999z0076/0005, SL: 15.5 mm, MD: 6.5 mm, Hrušovany nad Jevišovkou (the Czech Republic), illustrated in Hoernes &Auinger (1880, pl. 11, figs 26a–c), Figs 15E 1 –E 2. NHMW 1999z0076/0004, SL: 14.6 mm, MD: 6.1 mm, Sedlec (Porzteich) (the Czech Republic), illustrated in Hoernes & Auinger (1880, pl. 11, figs 25a–c), Figs 4R, 15G 1 –G 2. NHMW 1999z0076/0005, SL: 15.1 mm, MD: 6.9 mm, Hrušovany nad Jevišovkou (the Czech Republic), illustrated in Hoernes & Auinger (1880, pl. 11, figs 27a–c), Figs 15F 1 –F 2.

Description. Shell medium sized, moderately broad, with gradate spire and subcylindrical whorls with rounded shoulders. Protoconch conical multispiral of 3.5 convex whorls. Teleoconch of seven whorls. First two to three teleoconch whorls smooth with narrow subsutural spiral cord at adapical suture. Later teleoconch whorls with five to six low spiral cords separated by slightly narrower interspaces. Spiral cords irregularly and weakly interrupted by growth lines, rarely forming blurred beads. No axial ribs. Last whorl subcylindrical, slightly pinched below high-placed shoulder, strongly constricted base; cords coarser over siphonal fasciole. Aperture moderately narrow to narrow. Outer lip weakly thickened with about ten weak lirae, extending deep within aperture. Anal canal weakly incised, broad V-shaped. Siphonal canal long, narrow, slightly deflected. Columellar callus thickened forming sharply delimited, adherent callus rim, with about five weak columellar denticles. Parietal callus weak.

Shell measurements and ratios. SL: 14.6–15.5 mm, MD: 6.1–6.9 mm, AA: 39–42°, SL/MD: 2.4–2.5, AL/AW: 4.1–4.2, LWH/AH: 1.2–1.3.

Discussion. Auingeria grussbachensis   is reminiscent of A. bellardii   and was treated as a variety of that species by Hoernes & Auinger (1880). The absence of axial ribs, however, distinguishes A. grussbachensis   clearly from A. bellardii   . Auingeria austriaca   differs from A. grussbachensis   in having a higher spire, less rounded shoulder and in the absence of broad spiral cords.

Palaeoenvironment. The mollusc assemblage from Hrušovany nad Jevišovkou suggests inner neritic settings (own data).

Distribution in Central Paratethys. Badenian (middle Miocene): Carpathian Foredeep: Hrušovany nad Jevišovkou (the Czech Republic); Pannonian Basin: Szob ( Hungary) ( Strausz 1966); Bükk Mountains: Balaton ( Hungary) ( Csepreghy-Meznerics 1969).

Genus Martaia   nov. gen.

Type species. Columbella (Anachis) Dujardini Hoernes & Auinger, 1880   ; Middle Miocene , Austria   .

Etymology. In honour of Marta deMaintenon (University of Hawaii) in recognition of her contributions on Columbellidae   .

Diagnosis. Medium-sized shells with slender coeloconoid spire, prominent, close-set, rounded, orthocline axial ribs separated by narrow interspaces. Spiral sculpture of flattened cords separated by narrow grooves. Width of penultimate and last whorls allometrically increasing. Aperture narrowed by thickened internal labial callus pad, prominently denticulate within, callused anal canal, and narrow, sharply delimited columellar callus rim, bearing weak denticles.

Description. Large to medium-sized shells with slender coeloconoid spire, with prominent, orthocline axial ribs separated by narrower interspaces. Axial ribs and interspaces widening and flattening during ontogeny. Spiral sculpture of broad cords or flattened bands. Protoconch unknown. Fifth and sixth teleoconch whorls increasing in width and convexity, causing coeloconoid profile. Last whorl subcylindrical or convex, weakly to moderately contracting. Aperture narrowed by thickened internal labial callus pad. Outer lip thickened with distinct mid-labial callus pad and about seven to ten small to prominent denticles. Anal canal well developed. Siphonal canal short to medium length, moderately wide. Columellar callus forming prominent, thickened, well-delimited narrow rim with indistinct columellar denticles. Parietal callus thickened, slightly detached.

Stratigraphic and geographic range. Middle Miocene (Badenian, Langhian).

Included species. Martaia dujardini ( Hoernes & Auinger, 1880)   , Martaia zitteli ( Hoernes & Auinger, 1880)   .

Palaeoenvironment. Unknown.

Discussion. Martaia   is characterised by its slender early spire and the close-set axial ribs, which are crossed by prominent spiral cords or bands. In addition, the growth allometry of the penultimate and last whorls is typical. The late teleoconch of Martaia   is reminiscent of Euplica Dall, 1889   (type species Columbella turturina Lamarck, 1822   ) but it differs from Euplica   by its slender and prominently ribbed early spire and the much more prominent spiral sculpture. The genus is superficially reminiscent of Zanassarina Pilsbry & Lowe, 1932   (type species Zanassarina poecila Pilsbry & Lowe, 1932   ), which develops a comparable early spire but lacks close-set axial ribs. Moreover, Zanassarina   has a higher spire, a lower aperture, convex spire whorls and differs in its type of spiral sculpture of prominent but narrow, crested spiral cords. The presence of spiral cords distinguishes Martaia   from Costoanachis Sacco, 1890   . Scabrella Sacco, 1890   differs in its gradate early spire and wider spaced axial ribs. The spiral cords of Scabrella   , if present, are narrow instead of broad, band-like and Scabrella   lacks the growth allometry of the last whorls of Martaia   .


Naturhistorisches Museum, Wien














Auingeria grussbachensis ( Csepreghy-Meznerics, 1969 )

Harzhauser, Mathias & Landau, Bernard M. 2021

Pyrene (Anachis) bellardii grussbachensis

Palfy, J. & Dulai, A. & Gasparik, M. & Ozsvart, P. & Pazonyi, P. & Szives, O. 2008: 109

Pyrene (Anachis) bellardii grussbachensis

Csepreghy-Meznerics, I. 1969: 83

Columbella (Anachis) bellardii Hörnes, 1856

Strausz, L. 1966: 297

Columbella (Anachis) Bellardii M. Hoernes

Hoernes, R. & Auinger, M. 1880: 100

Columbella (Anachis) Bellardii M. Hoernes

Hoernes, R. & Auinger, M. 1880: 100