Oxymeris transleithana, Harzhauser & Landau, 2023
|
publication ID |
https://doi.org/ 10.11646/zootaxa.5385.1.1 |
|
publication LSID |
lsid:zoobank.org:pub:7FBEC9FB-E31E-4CA4-8BD0-BE6D35322C3E |
|
DOI |
https://doi.org/10.5281/zenodo.10463078 |
|
persistent identifier |
https://treatment.plazi.org/id/7C37CE5F-FFBD-AB2A-FF2C-FA4C31A2FC03 |
|
treatment provided by |
Plazi |
|
scientific name |
Oxymeris transleithana |
| status |
sp. nov. |
Oxymeris transleithana nov. sp.
Figs 14A–F View FIGURE 14
Terebra (Subula) fuscata modesta Trist. View in CoL — Strausz 1954: 37, pl. 2, figs 45a–c [non Oxymeris modesta Defrance, 1829 ].
Terebra (Subula) fuscata modesta View in CoL Tristan — Strausz 1962: 31, pl. 5, figs 12–14 [non Oxymeris modesta Defrance, 1829 ].
Terebra (Subula) fuscata modesta View in CoL Tristan (in Defrance)— Strausz 1966: 395, pl. 5, figs 12–14 [non Oxymeris modesta Defrance, 1829 ].
Type material. Holotype, NHMW 2023 View Materials /0298/0001, 71.9 mm, MD: 15.7 mm, Várpalota ( Hungary), Figs 14B View FIGURE 14 1 – B View FIGURE 1 2 View FIGURE 2 . Paratypes: NHMW 2023 View Materials /0298/0002, 81.7 mm, MD: 17.1 mm, Várpalota ( Hungary), Figs 14A View FIGURE 14 1 –A View FIGURE 1 2 View FIGURE 2 . NHMW 2023 View Materials /0298/0003, 73.5 mm, MD: 17.6 mm, Várpalota ( Hungary), Figs 14C View FIGURE 14 1 –C View FIGURE 1 2 View FIGURE 2 . NHMW 2023 View Materials /0298/0004, 100.8 mm, MD: 19.3 mm, Várpalota ( Hungary), Figs 14D View FIGURE 14 1 –D View FIGURE 1 2 View FIGURE 2 . NHMW 2023 View Materials /0298/0005, 77.0 mm, MD: 17.0 mm, Várpalota ( Hungary), Figs 14E View FIGURE 14 1 –E View FIGURE 1 2 View FIGURE 2 . NHMW 2023 View Materials /0298/0006, 70.1 mm, MD: 14.7 mm, Várpalota ( Hungary), Figs 14F View FIGURE 14 1 –F View FIGURE 1 2 View FIGURE 2 . 30 spec. , NHMW 2023 View Materials /0298/0007, Várpalota ( Hungary) .
Type locality. Várpalota ( Hungary), Pannonian Basin .
Type stratum. Sand of the Öskü Member of the Lajta Formation ( Kókay 2013).
Age. Middle Miocene, early Badenian (Langhian).
Etymology. Referring to Transleithania, the historical name for the Hungarian part of the Austro-Hungarian Dual Monarchy.
Diagnosis. Very large shell characterized by a change from slender coeloconoid early spire to obese cyrtoconoid late spire. Teleoconch whorls smooth, weak axial ribs only on early whorls, convex with high, ovoid last whorl and very short, wide siphonal canal.
Description. Very large shell of about 14 teleoconch whorls; apical angle 17°. Protoconch unknown. Early spire slender coeloconoid, changing to obese cyrtoconoid spire profile around tenth teleoconch whorl. Early teleoconch whorls subcylindrical, gradate, Sculpture of weak axial ribs. Later teleoconch whorls convex with periphery mid-whorl. Whorls smooth, except for delicate growth lines. Last whorl ovoid, very high, 42% of total height. Base weakly contracting. Fasciole prominent, very broad, adapically delimited by very prominent, sharp carina and separated from base by very narrow groove. Aperture very narrow, elongate. Columella slightly twisted, weakly excavated in adapical third. Parietal area slightly convex. Columellar callus forming thin, broad rim, weakly delimited from base. Anal canal narrowly incised, indistinct. Outer lip thin. Basal lip moderately wide. Siphonal canal very short, wide, deeply notched at tip.
Discussion. Oxymeris transleithana is characterised by the contrast between the very slender whorls on the top third of the spire giving a coeloconoid profile and the later inflated whorls giving the bottom two-thirds a cyrtoconoid profile. This change in growth rate is not seen in any of its European Neogene congeners. It differs from O. modesta in its obese outline, the more convex last two spire whorls and the higher last whorl (42% vs. 35–37%). Oxymeris buiturica ( Hoernes & Auinger, 1880) differs in its smaller size, slender conical outline and prominent axials sculpture. Similarly, Oxymeris plicaria (de Basterot, 1825) differs in its more regular conical outline and distinct axials sculpture on early spire whorls.
Paleoenvironment. Agitated sandy, coastal environments (own data).
Distribution in Central Paratethys. Badenian (Middle Miocene): Vienna Basin: Traiskirchen ( Austria) (hoc opus); Pannonian Basin: Várpalota ( Hungary).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
|
Kingdom |
|
|
Phylum |
|
|
Class |
|
|
Order |
|
|
Family |
|
|
Genus |
Oxymeris transleithana
| Harzhauser, Mathias & Landau, Bernard M. 2023 |
Terebra (Subula) fuscata modesta
| Strausz, L. 1966: 395 |
Terebra (Subula) fuscata modesta
| Strausz, L. 1962: 31 |
Terebra (Subula) fuscata modesta
| Strausz, L. 1954: 37 |