Monteiroconus mojsvari ( Hoernes & Auinger, 1879 )

Harzhauser, Mathias & Landau, Bernard, 2016, A revision of the Neogene Conidae and Conorbidae (Gastropoda) of the Paratethys Sea, Zootaxa 4210 (1), pp. 1-178 : 110-112

Monteiroconus mojsvari ( Hoernes & Auinger, 1879)

Figs 17 T, 25E1–E2, 25F1–F 2, 26I, 26J

Conus Mercati Brocc. —Hörnes 1851: 23 (partim), pl. 2, figs 1a–b [non Monteiroconus mercati ( Brocchi, 1814) ].

[ Dendroconus ] [ Conus ] Mojsvari n. f.— Hoernes 1878a: 195 (nomen nudum).

[ Dendroconus ] [ Conus ] Gainfahrensis n. f.— Hoernes 1878a: 195 (nomen nudum).

Conus (Dendroconus) Mojsvari nov. form.— Hoernes & Auinger 1879: 18, pl. 3, fig. 2.

Conus (Dendroconus) Gainfahrenensis nov. form.— Hoernes & Auinger 1879: 18, pl. 2, fig. 4.

Conus (Lithoconus) Mercati Brocc. — Hoernes & Auinger 1879: 27 (partim).

[ Conus ] L. [ithoconus] Mercatii var. miocaenica Sacc. — Sacco 1893a: 20 [nov. nom. pro Conus mercati in Hörnes 1851 , pl. 2, fig. 1].

Conus (Lithoconus) mercatii [sic] miocaenica [sic] Sacco—Csepreghy-Meznerics 1956: 421, pl. 10, figs 7–8.

Conus (Lithoconus) mercati Brocc. — Florei 1961: 688, pl. 9, fig. 66 [non Monteiroconus mercati ( Brocchi, 1814) ].

Conus (Lithoconus) mercatii miocaenicus [sic] Sacco, 1893— Strausz 1966: 455, pl. 68, figs 3–5.

Conus (Lithoconus) mercatii miocaenicus [sic] Sacco, 1893– Nicorici & Sagatovici 1973: 175, pl. 27, fig. 1. Conus (Lithoconus) mercati sharpeanus ( Costa) 1866 —Bohn-Havas 1973: 1123, pl. 7, fig. 9.? Conus (Lithoconus) mercatti [sic] subaustriaca Sacco—Chira & Voia 2001: 156, pl. 2, figs 4a–b. Conus (Lithoconus) mercatti [sic] miocenicus Sacco—Chira & Voia 2001: 156 , pl. 2, figs 3a–b. Monteiroconus mercati ( Brocchi, 1814) — Kovács & Vicián 2013: 78, figs 89–91 (non figs 87–88) [non Monteiroconus mercati

( Brocchi, 1814)].

non Conus (Lithoconus) mercati miocaenicus [sic] Sacco—Nicorici 1972: 70, pl. 17, figs 1–2 [= Monteiroconus daciae Hoernes & Auinger, 1879 )].

non Conus (Lithoconus) mercati Brocchi—Schultz 1998: 72 , pl. 29, figs 12a–b [= Monteiroconus daciae ( Hoernes & Auinger, 1879) ].

non Conus (Lithoconus) mercatti [sic] caniculatodepresa Sacco—Chira & Voia 2001: 156, pl. 2, figs 2a–b [= Pseudonoduloconus austriacus ( Hoernes & Auinger, 1879) ].

Type material. Syntype NHMW 1853 /0010/0001, Gainfarn ( Austria), illustrated in Hoernes & Auinger (1879, pl. 3, fig. 2), 2 spec . syntypes NHMW 1867 /9919/0001, Coşteiu de Sus ( Romania) ; middle Miocene, Badenian (late Langhian). The type locality of Conus gainfahrenensis Hoernes & Auinger, 1879 , considered to be junior synonym of M. mojsvari , is the middle Miocene locality Gainfarn in Austria. The type locality of Conus miocaenicus Sacco, 1893 , considered to be junior synonym of M. mojsvari , is the middle Miocene locality Pötzleinsdorf in Austria.

Studied material. Syntypes and 1 spec . NHMW 1847 /0037/0024, Pötzleinsdorf ( Austria), illustrated specimen in Hörnes (1851, pl. 2, fig. 1), syntype of Conus miocaenicus Sacco, 1893 ; 1 spec . NHMW 1855 /0045/ 0 0 0 1, Steinebrunn ( Austria) ; 1 NHMW 1853/0003/0001, 1 spec. NHMW 1997z0178/1484, 1 spec. NHMW 1855/ 0045/0354, 4 spec. NHMW 1846 /0037/0046, Gainfarn ( Austria) ; 1 spec. NHMW 1848 /0021/0023, Grinzing ( Austria) .

Illustrated material. Figs 25 E1–E 2,26I, 17T: Pötzleinsdorf ( Austria): SL: 103.6 mm, MD: 60.3 mm, NHMW 1847/0037/0024, illustrated in Hörnes (1851, pl. 2, fig. 1); Figs 25 F1–F2,26J: syntype, Gainfarn ( Austria): SL: 87.2 mm, MD: 54.3 mm, NHMW 1853/0010/0001, illustrated in Hoernes & Auinger (1879, pl. 3, fig. 2).

Revised description. Moderately large to large shell up to 105 mm in height; about 10 teleoconch whorls. Depressed spire with initially moderately coeloconoid and later low conical outline; adapical half of spire whorls weakly concave, distinctly striate; abapical part convex, sometimes bulging. Subsutural flexure of medium depth, strongly curved, moderately asymmetrical; suture usually wavy and irregular. Shoulder weakly angulated; position of maximum diameter slightly below shoulder; last whorl regularly conical below periphery, not constricted. Surface smooth except for weak growth lines and indistinct, low spiral cords on base. Aperture moderately wide, anteriorly broadening; siphonal canal very short, wide, nearly straight; fasciole not well demarcated, weakly swollen with prominent growth lines; inner lip twisted. No colour pattern preserved.

Shell measurements and ratios. n = 8 adult and subadult specimens: largest specimen: SL: 105 mm, MD: 63.8 mm, mean SL: 89.3 mm (σ = 11.2), mean MD: 53.7 mm (σ = 6.7), spire angle: µ = 132.3° (σ = 8.5°), last whorl angle: µ = 37.3° (σ = 2.1°), LW: µ = 1.67 (σ = 0.06), RD: µ = 0.66 (σ = 0.02), PMD: µ = 0.88 (σ = 0.02), RSH: µ = 0.09 (σ = 0.01).

Discussion. The very broad species concept of Hörnes (1851) united several species as Conus mercati , which were later recognized as distinct taxa by Hoernes & Auinger (1879) and Sacco (1893a). Monteiroconus mercati has smooth spire whorls, whereas the Paratethyan shells variously placed on M. mercati in the literature all have striate spire whorls (see Landau et al. 2013). The first available name for this mercati- like shells with conical spire (in contrast to M. daciae ) and moderately elongate last whorl is Conus mojsvari Hoernes & Auinger, 1879 . Later, Sacco (1893a) introduced Conus mercatii miocaenica as variation name for the specimen illustrated by Hörnes (1851, pl. 2, fig. 1) without discussing its relation with C. mojsvari . The only difference between the syntypes of Monteiroconus mojsvari and the syntype of M. miocaenicus is the larger size, more elongate last whorl and the slightly gradate last two spire whorls of M. miocaenicus . As there are also intermediate specimens between both morphotypes, we consider M. miocaenicus a very large specimen of M. mojsvari and treat it as subjective junior synonym.

The single specimen, described by Hoernes & Auinger (1879) as Conus gainfahrenensis (NHMW 1855/0045/ 0351), is just an aberrant specimen of M. mojsvari with a slight constriction in the middle of the last whorl.

Paleoenvironment. All occurrences reflect shallow water environments, partly with sea grass meadows and coral patches ( Zuschin et al. 2007; Kovács & Vicián 2013).

Distribution in Paratethys. Badenian (middle Miocene): Vienna Basin: Gainfarn Pötzleinsdorf, Steinebrunn, Grinzing ( Austria) ( Hoernes & Auinger 1879; Sieber 1958b; NHMW collection); Pannonian Basin: Várpalota, Letkés, Szob, Biatorbágy, Devecser, Diósd, Kemence, Márkháza, Mátraverebély, Sámsonháza, Budapest: Adria street, Illés street, Rákos ( Hungary) ( Kovács & Vicián 2013); Caransebeş-Mehadia Basin: Zorlenţu-Mare ( Romania) ( Florei 1961); Transylvanian Basin: Coşteiu de Sus, Lăpugiu de Sus ( Romania) (NHMW collection); Zârand Basin: Minişul de Sus ( Romania) ( Nicorici & Sagatovici 1973).

Figures

FIGURE 25 A 1 – A 3. Monteiroconus daciae (Hoernes & Auinger, 1879), Lăpugiu de Sus (Romania), NHMW 1858 / 0043 / 0002, syntype. 25 B 1 – B 3. Monteiroconus daciae (Hoernes & Auinger, 1879), Ritzing (Austria). NHMW 1930 / 0006 / 0034. 25 C 1 – C 3. Monteiroconus girondicus (Peyrot, 1931), Bad Vöslau (Austria), NHMW 2010 / 0004 / 1569 a. 25 D 1 – D 3. Monteiroconus girondicus (Peyrot, 1931), Bad Vöslau (Austria), NHMW 2010 / 0004 / 1569 b. 25 E 1 – E 2,. Monteiroconus mojsvari (Hoernes & Auinger, 1879), Pötzleinsdorf (Austria), NHMW 1847 / 0037 / 0024. 25 F 1 – F 2. Monteiroconus mojsvari (Hoernes & Auinger, 1879), Gainfarn (Austria), NHMW 1853 / 0010 / 0001, syntype.