Figovina yasenivensis Harzhauser, Landau & Guzhov, 2025, nov. sp.
Year: 2025
Type: other
Abstract: Figovina yasenivensis nov. sp. Figs 48A–B Type material. Holotype: PIN 5904 /142, SL: 12.2 mm, MD: 12.1 mm, Yaseniv (Ukraine), Figs 48A 1 –A 5. Paratype: PIN 5904 /143, SL: 10.5 mm, MD: 10.4 mm, Yaseniv (Ukraine), Figs 48B 1 –B 4. Type locality. Yaseniv (Ukraine), Ukrainian Fore-Carpathian Basin. Type stratum. Unknown. Age. Middle Miocene, late Badenian (Serravallian). Etymology. Named after type locality. Diagnosis. Small, globular shell with straight, shallow subsutural ramp and wide, open umbilicus covered adapically by far expanding and heavy anterior lobe of parietal callus; without funicle; abapical sulcus delimited by very prominent spiral ridge bent towards interior of umbilicus. Description. Small, globular shell of 4.5 whorls; as wide as high (SL/MD = 1.0); spire low, apical angle 126– 128°. Protoconch with smooth initial whorl, not clearly delimited from teleoconch. Suture linear, slightly impressed. Whorls with shallow, straight subsutural ramp, delimited by slight spiral depression. Periphery and base convex. Last whorl inflated, attaining 95% of total height. Periphery at mid-whorl (~50%). Growth lines faint and prosocline in apical view, prosocyrt near suture, delicate and prosocline at periphery. Aperture D-shaped, prosocline, attaining ~78% of total height. Position of adapical tip of aperture moderately low (~80%), slightly above periphery. Parietal callus long (~55%), strongly thickened with adapical swelling and weakly concave margin; strongly expanding abapically, covering adapical half of umbilicus. Columellar lip slightly constricted just below parietal callus, strongly thickened below, forming right-angled, narrow, flattened callosity together with basal lip. Columellar angle ~20°. Umbilicus moderately wide (~20%), open, deep; without visible funicle, delimited abapically by more or less prominent spiral ridge sharply sloping towards interior of umbilicus. Discussion. Figovina yasenivensis nov. sp. is intermediate between Figovina szobiensis (Strausz, 1959) and Figovina sarmatica (Friedberg, 1938) concerning the length of the anterior lobe of the parietal callus. This lobe is much longer in F. szobiensis but shorter on F. sarmatica. In addition, Figovina sarmatica is much smaller and thin-shelled. Figovina yasenivensis nov. sp. seems to be another species endemic to the late Badenian of the Ukrainian Fore-Carpathian Basin. Paleoenvironment. Shallow marine, inner neritic. Distribution in Central Paratethys. Ukrainian Fore-Carpathian Basin: Yaseniv (Lviv Region, Ukraine) (hoc opus).
Authors: Harzhauser, Mathias, Landau, Bernard M., Guzhov, Aleksandr
Language: English
Subfield: Paleontology
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7087925895
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