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.5622413 |
persistent identifier |
https://treatment.plazi.org/id/373F87D7-FF1F-FF0C-FF5F-A8E1FCD643C2 |
treatment provided by |
Plazi |
scientific name |
Plagioconus |
status |
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Plagioconus View in CoL austriaconoe (Sacco, 1893)
Figs 30 F, 31A1–A3, 31B1–B3
Conus Noe Brocc. View in CoL —Hörnes 1851: 27, pl. 3, figs 1a–c [non Conus noe Brocchi, 1814 ].
Conus (Chelyconus) Noe Brocc. Var. — Hoernes & Auinger 1879: 43.
Conus (Leptoconus) Puschi Michti. View in CoL — Hoernes & Auinger 1879: 34 (partim), pl. 5, fig. 7.
[ Conus View in CoL ] Chelyconus austriaconoe Sacc. — Sacco 1893b: 85 [nov. nom. pro. Conus noe in Hörnes 1851 , pl. 3, fig. 1].
[ Conus (Chelyconus) View in CoL ] pseudopuschi Sacc. — Sacco 1893b: 60 (nov. nom. pro Conus puschi in Hoernes & Auinger 1879 View in CoL , pl. 5, fig. 7).
Conus (Chelyconus) noe Brocchi—Chira & Voia 2001: 156 , pl. 3, figs 2a–b.
Plagioconus View in CoL marii (Sacco, 1893) — Kovács & Vicián 2013: 81 (partim), fig. 108 [non Plagioconus View in CoL marii (Sacco, 1893) ].
non Conus (Chelyconus) austriaconoe Sacco—Kautsky 1925: 146 , pl. 10, fig. 16 [= Lautoconus clavatulus (d’Orbigny, 1852) ]. non Conus (Chelyconus) austriaconoae Sacco 1893 —Kojumdgieva in Kojumdgieva & Strachimirov 1960: 212, pl. 50, fig. 2 [= Plagioconus elatus ( Michelotti, 1847) View in CoL ].
Type material. Holotype: NHMW 1843 View Materials /0032/0026, Baden ( Austria), illustrated in Hörnes (1851, pl. 3, fig. 1).
Studied material. Holotype and 2 spec. NHMW A 1612, 4 spec. NHMW 2013 View Materials /0300/0526, Baden-Sooß ( Austria), 1 spec . NHMW1869/0001/0423, 1 spec. NHMW 1863 View Materials /0015/0399, Forchtenau ( Austria), 2 spec . NHMW 1868 View Materials /0001/0382, Lăpugiu de Sus ( Romania); middle Miocene, Badenian ( Langhian ).
Illustrated material. Figs 30 F, 31A1–A3: Baden-Sooß ( Austria): SL: 92.7 mm, MD: 35.7 mm, NHMW 2013/ 0300/0526; Figs 31 View FIGURE 31 B1–B3: Lăpugiu de Sus ( Romania): SL: 76.6 mm, MD: 32.5 mm, NHMW 1868/0001/0382.
Revised description. Large club-shaped shell, up to 94 mm in height with tall mammillate-cyrtoconoid spire. Earliest spire whorls strongly pointed; spire whorls broad, weakly convex but of bulgy appearance due to the deeply incised suture. Very faint spiral threads on early whorls; weak beads above suture, rarely preserved. Last whorl with broadly rounded shoulder; subsutural flexure deep, strongly curved, strongly asymmetrical. Position of maximum diameter some distance below upper suture; straight sided to weakly constricted in middle part, moderately constricted at base. Fasciole long, twisted and demarcated by deep and broad groove from narrow plait. Siphonal canal long, slightly recurved. Aperture narrow, widening anteriorly. Sculpture consisting of spiral threads on last whorl, strengthening on lower half; spiral threads interrupted by growth lines causing a wavy pattern. Colour pattern under UV light consisting of weak spirals of speckles on last whorl.
Shell measurements and ratios. Only two shells are complete, all others lack the siphonal canal; for these species the ratios are: largest specimen: SL: 92.7 mm, MD: 35.7 mm, last whorl angle: µ = 23/28°, LW: µ = 2.6/2.4, RD: µ = 0.47/0.52, PMD: µ = 0.91/0.89, RSH: µ = 0.19/0.18.
Discussion. The specimens display some variability concerning spire height, but the conspicuous club-shaped outline and large size allow this species to be easily separated from other Paratethyan cones shells. Plagioconus austriaconoe is reminiscent of P. clavatulus (d’Orbigny, 1852) , from the European early and middle Miocene, and is probably closely related (see Peyrot 1931; Hall 1966; Janssen 1984). Both develop convex spires with markedly pointed early spire and have broadly rounded shoulders. A separation is based on the higher spire, the bulgy spire whorls, the more elongate last whorl and the lower position of the maximum diameter of P. austriaconoe . Conus pseudopuschi Sacco, 1893 was based on a single strongly fragmented and slightly deformed specimen from offshore clays of the Vienna Basin. The spire is largely destroyed except for parts of the last three whorls. We consider this specimen to represent a P. austriaconoe with somewhat deeper concavity below the adsutural swelling. Therefore, Conus pseudopuschi is a subjective junior synonym of Plagioconus austriaconoe .
Paleoenvironment. Plagioconus austriaconoe is a rare species, which was found so far only in offshore clays.
Distribution in Paratethys. Badenian (middle Miocene): Vienna Basin: Baden ( Austria) ( Hoernes & Auinger 1879); Eisenstadt-Sopron Basin: Forchtenau ( Austria) ( Sieber 1956); Alpine-Carpathian Foredeep: Grund ( Austria); Pannonian Basin: Letkés ( Hungary) ( Kovács & Vicián 2013); Transylvanian Basin: Lăpugiu de Sus, Coşteiu de Sus ( Romania) ( Boettger 1906; Chira & Voia 2001).
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.
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Plagioconus
Harzhauser, Mathias & Landau, Bernard 2016 |
Plagioconus
Kovacs 2013: 81 |
Conus (Chelyconus) noe Brocchi—Chira & Voia 2001 : 156
Voia 2001: 156 |
Conus
Sacco 1893: 85 |
Conus (Chelyconus)
Sacco 1893: 60 |
Conus (Chelyconus) Noe Brocc. Var.
Hoernes 1879: 43 |
Conus (Leptoconus) Puschi Michti.
Hoernes 1879: 34 |