Plagioconus
publication ID |
https://doi.org/ 10.11646/zootaxa.4210.1.1 |
publication LSID |
lsid:zoobank.org:pub:D39416B8-CF85-440B-84C2-D4380BECC4E3 |
DOI |
https://doi.org/10.5281/zenodo.5622421 |
persistent identifier |
https://treatment.plazi.org/id/373F87D7-FF19-FF09-FF5F-A8E1FC75400F |
treatment provided by |
Plazi (2017-01-19 23:52:59, last updated 2024-11-28 19:06:04) |
scientific name |
Plagioconus |
status |
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Plagioconus View in CoL extensus (Hörnes, 1851)
Figs 30 K, 32C1–C3, 32D, 32E1–E3
[ Conus View in CoL ] extensus n. sp. — Hauer 1837: 416 (nomen nudum).
Conus extensus Partsch—Hörnes 1851: 37 View in CoL , pl. 5, figs 1a–c.
Conus (Leptoconus) extensus Partsch—Hoernes & Auinger 1879: 34 View in CoL .
Conus (Leptoconus) extensus View in CoL Partsch—Csepreghy-Meznerics 1956: 421, pl. 11, figs 7–8.
? Conus (Leptoconus) extensus (Partsch in Hörnes 1856) View in CoL —Kojumdgieva in Kojumdgieva & Strachimirov 1960: 210, pl. 49, fig. 6.
Conus (Leptoconus) extensus Partsch—Strausz 1966: 453 View in CoL , pl. 67, figs 11–12.
Conus extensus Partsch—Wank 1981: 285 View in CoL , pl. 1, fig. 2.
Conus (Phasmoconus) extensus Partsch—Schultz 1989: 72 View in CoL , pl. 29, fig. 13.
Conus (Chelyconus) puschi Michelotti—Chira & Voia 2001: 156 View in CoL , pl. 4, figs 1a–b [non Plagioconus View in CoL puschi ( Michelotti, 1847) View in CoL ].
Plagioconus View in CoL extensus (Partsch in Hörnes, 1856) View in CoL — Kovács & Vicián 2013: 79, figs 97–100.
Conus extensus Partsch—Fözy & Szente 2014: 311 View in CoL , text-fig. 5.
non Conus (Leptoconus) extensus Partsch—Chira & Voia 2001: 156 View in CoL , pl. 2, figs 1a–b [= Plagioconus View in CoL marii (Sacco, 1893) ].
Type material. 2 syntypes NHMW 1847 View Materials /0037/0031, Baden ( Austria), including specimen illustrated in Hörnes (1851, pl. 5, fig. 1), middle Miocene , Badenian (late Langhian).
Studied material. Syntypes and 1 spec. NHMW 1869/0001/0159, 1 spec. NHMW 1997 View Materials z0178/0871, Badenian Baden ( Austria); 2 spec . NHMW 2015/0391/0001 including specimen illustrated in Schultz (1998, pl. 29, fig. 13), 3 spec. NHMW 1872/0030/0017, 10 spec. NHMW 2013 View Materials /0300/0525, all Baden-Sooß ( Austria); 1 spec . NHMW 1855 View Materials /0045/0370, Gainfarn ( Austria), 3 spec . NHMW 1854/00035/0053, 3 spec. NHMW 1854/0035/0052, 2 spec. NHMW 1855/0043/0003, 2 spec. NHMW 1859/0037/0001, 1 spec. NHMW 1868/0001/0384, 2 spec. NHMW 1866/0040/0247, 4 spec. NHMW 1875/0009/0005, 1 spec. NHMW 1875/0009/0004, 2 spec. NHMW 1890/0001/ 0 0 11, 2 spec. NHMW 1890/0001/0013, 2 spec. NHMW 1973/1615/0062, 3 spec. NHMW 2015/0392/0001, 8 spec. NHMW 2015/0392/0002, 2 spec. NHMW 1858 View Materials /0043/0004, all Lăpugiu de Sus ( Romania), 1 spec . NHMW 1867 View Materials / 0019/0010, Coşteiu de Sus ( Romania): 1 spec . NHMW 2015 View Materials /0393/0001, Nemeşeşti ( Romania).
Illustrated material. Figs 32 View FIGURE 32 C1–C3: Lăpugiu de Sus ( Romania): SL: 89.3 mm, MD: 35.3 mm, NHMW 1890/ 0001/0011; Figs 32 View FIGURE 32 D: Lăpugiu de Sus ( Romania), SL: 89.0, MD: 36.0 mm, NHMW 1859/0037/0001; Figs 30 K, 32E1–E3: Baden-Sooß ( Austria): SL: 96.0 mm, MD: 33.2 mm, NHMW 1872/0030/0017.
Revised description. Large shells comprising at least 10 tall teleoconch whorls; spire short, conical to weakly coeloconoid. Early whorls angular above suture with coarse beads, central angulation becoming mid-whorl inflation abapically. Sutural ramp bearing subsutural collar/band and spiral striae developed to a variable degree; ramp becoming increasingly concave abapically. Suture deeply impressed. Subsutural flexure very deep, moderately curved, strongly asymmetrical. Last whorl very elongate, weakly constricted at base; moderately round shoulder with position of maximum diameter a short distance below shoulder. Aperture narrow, widening abapically. Siphonal canal long, weakly recurved; fasciole elongate, slightly twisted and demarcated from narrow glossy inner lip by a narrow notch. Base covered by very delicate spiral grooves on adapical half; grooves become stronger and wider abapically; usually somewhat irregular and pitted. Colour pattern in UV light consisting of light flammulae on spire whorls and shoulder of last whorl parallel to subsutural flexure; indistinct bands on last whorl.
Shell measurements and ratios. n = 12 adult and subadult specimens: largest specimen: SL: 107 mm, MD: 39 mm, mean SL: 88.2 mm (σ = 10.4), mean MD: 32 mm (σ = 3.7), spire angle: µ = 82.7° (σ = 4.3°), last whorl angle: µ = 22.3° (σ = 1.7°), LW: µ = 2.76 (σ = 0.19), RD: µ = 0.44 (σ = 0.03), PMD: µ = 0.95 (σ = 0.02), RSH: µ = 0.17 (σ = 0.03).
Discussion. This species is characterized by the concave sutural ramp bearing spiral striae, the distinct but rounded shoulder and rather moderate variability in outline. The largest variability is represented by the more or less prominent spiral sculpture. Hörnes (1851) had only a single complete specimen at hand, which has been largely destroyed thereafter; only the spire is preserved. Since then, numerous shells were collected at Baden, Baden-Sooß and Lăpugiu de Sus.
Paleoenvironment. The majority of shells were collected in basinal clays. In contrast, only a single specimen was found in the seagrass environment of Gainfarn ( Austria). This suggests that Plagioconus extensus was probably an offshore species.
Distribution in Paratethys. Badenian (middle Miocene): Alpine-Carpathian Foredeep: Grund ( Austria) ( Sieber 1947); Vienna Basin: Baden, Baden-Sooß, Gainfarn, Steinebrunn ( Austria) ( Hoernes & Auinger 1879; Sieber 1958b); Lavanttal Basin: Mühldorf ( Austria) (Wank 1981); Pannonian Basin: Hont, Letkés, Szob ( Hungary) ( Kovács & Vicián 2013); Transylvanian Basin: Lăpugiu de Sus, Coşteiu de Sus, Nemeşeşti ( Romania) ( Boettger 1902, 1906; Chira & Voia 2001); Dacian Basin: Opanec ( Bulgaria) ( Kojumdgieva & Strachimirov 1960). No reliable occurrences from the proto-Mediterranean Sea are known to date.
Hoernes, R. & Auinger, M. (1879) Die Gasteropoden der Meeres-Ablagerungen der ersten und zweiten Miocanen Mediterran- Stufe in der Osterreichisch-Ungarischen Monarchie. Abhandlungen der Kaiserlich-Koniglichen Geologischen Reichsanstalt, 12, 1 - 52.
Boettger, O. (1902) Zur Kenntnis der Fauna der mittelmiocanen Schichten von Kostej im Krasso - Szorenyer Komitat. (Mit einem Situationsplan der Fundpunkte). II. Verhandlungen und Mitteilungen des Siebenburgischen Vereins fur Naturwissenschaften zu Hermannstadt, 51, 1 - 200.
Boettger, O. (1906) Zur Kenntnis der Fauna der mittelmiocanen Schichten von Kostej im Krasso-Szorenyer Komitat. Gasteropoden und Anneliden III. Verhandlungen und Mitteilungen des Siebenburgischen Vereins fur Naturwissenschaften zu Hermannstadt, 54, 1 - 99.
Chira, C. & Voia, I. (2001) Middle Miocene (Badenian) Conidae from Lapugiu de Sus, Romania: systematical and palaeoecological data. Studia Universitatis Babes-Bolyai, Geologia, 46, 151 - 160. http: // dx. doi. org / 10.5038 / 1937 - 8602.46.2.13
Hauer, F. von (1837) Uber das Vorkommen fossiler Thierreste im tertiaren Becken von Wien. Neues Jahrbuch fur Mineralogie, Geognosie, Geologie und Petrefaktenkunde, 1837, 408 - 431.
Hornes, M. (1851 - 1870) Die fossilen Mollusken des Tertiar-Beckens von Wien. Abhandlungen der K. K. Geologischen Reichsanstalt, 3, 1 - 42, pl. I - V (1851), 43 - 208, pl. VI - XX (1852), 209 - 296, pl. XXI - XXXII (1853), 297 - 382, pl. XXXIII - XL (1854), 383 - 460, pl. XLI-XLV (1855), 461 - 736, pl. XLVI - LII (1856); 4, 1 - 479, pl. I - LXXXV (1870).
Kojumdgieva, E. M. & Strachimirov, B. (1960) Les fossiles de Bulgarie. VII. Tortonien. Academie des Sciences de Bulgarie, Sofia, 317 pp.
Kovacs, Z. & Vician, Z. (2013) Badenian (middle Miocene) Conoidean (Neogastropoda) fauna from Letkes (N Hungary). Fragmenta Palaeontologica Hungarica, 30, 53 - 100.
Michelotti, G. (1847) Description des fossiles des terrains miocenes de l'Italie septentrionale. Ouvrage publie par la societe Hollandaise des Sciences, et accompagne d'un atlas de 17 planches. Natuurkundelige Verhandelingen van de Hollandsche Maatschappei van Wetenschappen te Haarlem, Ser. 2, 3 (2), 1 - 408.
Schultz, O. (1998) Tertiarfossilien Osterreichs, Wirbellose, niedere Wirbeltiere und marine Saugetiere; schone, interessante, haufige und wichtige Makrofossilien aus den Bestanden des Naturhistorischen Museums Wien und Privatsammlungen; eine Bilddokumentation. Golschneck-Verlag, Weinstadt, 159 pp.
Sieber, R. (1947) Die Fauna von Windpassing bei Grund in Niederosterreich (Bezirk Hollabrunn). Verhandlungen der Geologischen Bundesanstalt, 1945, 155 - 163.
Sieber, R. (1958 b) Die Tortonfauna von Steinabrunn bei Drasenhofen (Bez. Mistelbach, N. - O.). Verhandlungen der Geologischen Bundesanstalt, 1958, 142 - 155.
Fozy, I. & Szente, I. (2014) Fossils of the Carpathian Region. Life of the Past. Indiana University Press, Bloomington, XXII + 483 pp.
NHMW |
Naturhistorisches Museum, Wien |
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 |
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Phylum |
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Class |
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Order |
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Family |
Plagioconus
Harzhauser, Mathias & Landau, Bernard 2016 |
Conus extensus Partsch—Fözy & Szente 2014 : 311
Szente 2014: 311 |
Plagioconus
Kovacs 2013: 79 |
Conus (Chelyconus) puschi Michelotti—Chira & Voia 2001 : 156
Voia 2001: 156 |
Conus (Leptoconus) extensus Partsch—Chira & Voia 2001 : 156
Voia 2001: 156 |
Conus (Leptoconus) extensus (Partsch in Hörnes 1856 )
Kojumdgieva 1960: 210 |
Conus (Leptoconus) extensus Partsch—Hoernes & Auinger 1879 : 34
Auinger 1879: 34 |
Conus
Hauer 1837: 416 |
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