Fraudifusinus grundensis Harzhauser & Landau & Vermeij 2024, nov. sp.
Creators: name: Harzhauser, Mathias
name: Landau, Bernard M.
name: Vermeij, Geerat J.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Fasciolariidae
Fraudifusinus
Fraudifusinus grundensis

description: Fraudifusinus grundensis nov. sp.   
Figs 4M, 19A–D  
 Fusus rostratus Olivi —Hoernes 1853: 290 (pars).   
 Fusus crispoides nob.—Hoernes & Auinger 1890: 251 (pars).   
 Type material. Holotype: NHMW 1855 /0045/0720b, SL: 40.5 mm, MD: 19.6 mm, Grund (Austria), Figs 4M, 19B 1 –B 2. Paratypes: NHMW 1855 /0045/0720a, SL: 45.7 mm, MD: 19.1 mm, Grund (Austria), Figs 19A 1 –A 2. NHMW 1855 /0045/0720c, SL: 41.5 mm, MD: 18.4 mm, Grund (Austria), Figs 19C 1 –C 2. NHMW 1855 /0045/0720, SL: 34.6 mm, MD: 17.3 mm, Grund (Austria), Figs 19D 1 –D 2.   
 Type locality. Grund (Austria), North Alpine Foreland Basin.   
 Type stratum. Grund Formation.   
 Age. Middle Miocene, early Badenian (Langhian).   
 Etymology. Referring to the type locality Grund in Austria.   
 Diagnosis. Medium-sized, moderately slender fusiform shell with high spire, strongly convex whorls with weakly convex subsutural ramp, slight angulation below mid-whorl and deeply incised suture, sculpture of very broad axial ribs overrun by prominent primary to tertiary spiral cords, outer lip with few discontinuous lirae inside and two to three weak denticles at transition to siphonal canal.   
 Description. Medium-sized, moderately slender fusiform shell of up to seven teleoconch whorls; apical angle ~45°. Protoconch unknown. Early teleoconch whorls strongly convex with deeply incised suture. Axial sculpture of broad, very prominent ribs separated by wider interspaces, overrun by two weak spiral cords below adapical suture and three prominent spiral cords along periphery. Suture strongly undulating. Later whorls with convex subsutural ramp delimited by weakly angled shoulder placed slightly below mid-whorl. One secondary cord intercalated between primaries, flanked by tertiary threads in some interspaces. Last whorl attaining 56–60% of total height, slightly inflated, strongly convex, bearing eight axial ribs; strongly constricted at weakly convex base; base and siphonal canal with regularly alternating prominent primary and secondary spirals. Aperture moderately, wide pyriform. Columellar callus forming narrow rim, sharply delimited from base. Columella moderately excavated in upper half, smooth, slightly twisted at transition to siphonal canal. Anal canal moderately incised, accentuated by broad, low parietal denticle. Outer lip with several moderately long, discontinuous lirae of variable strength and number. Two to three weak denticles at transition to siphonal canal. Siphonal canal moderately long, moderately narrow, slightly deflected to the left.   
 Discussion. This species was confused with Fraudifusinus crispoides (Kittl, 1887) and Fraudifusinus pseudocrispoides nov. sp. in the collections of the NHMW but differs from both species in its larger size, relatively higher spire and lower last whorl.   
 Distribution in Central Paratethys. Badenian (Middle Miocene): North Alpine-Carpathian Foreland Basin: Grund (Austria).
description: Published as part of Harzhauser, Mathias, Landau, Bernard M. & Vermeij, Geerat J., 2024, The Dolicholatiridae and Fasciolariidae (Gastropoda, Buccinoidea) of the Miocene Paratethys Sea, pp. 1-92 in Zootaxa 5470 (1) on pages 46-48, DOI: 10.11646/zootaxa.5470.1.1, http://zenodo.org/record/12189689