A revision of the Neogene Conidae and Conorbidae (Gastropoda) of the Paratethys Sea
Author
Harzhauser, Mathias
Author
Landau, Bernard
text
Zootaxa
2016
4210
1
1
178
journal article
37280
10.11646/zootaxa.4210.1.1
e782e07d-76b7-4e9b-ba34-ed3286254ec6
1175-5326
252966
D39416B8-CF85-440B-84C2-D4380BECC4E3
Lautoconus pseudoponderosus
(Glibert, 1952)
Conus
(
Chelyconus
)
pseudoponderosus
Dollfus et Dautzenberg
mss., nov. sp.—
Glibert 1952a
: 376
, pl. 13, fig. 4.
Conus
(
Rhizoconus
)
ponderosus grinzingensis
Sacco—Csepreghy-Meznerics 1956: 436, pl. 10, figs 3–4 [non
Conus grinzingensis
Sacco, 1893
=
Lautoconus steinabrunnensis
(Sacco, 1893)
].
Conus
(
Chelyconus
)
pseudoponderosus
Dollfus & Dautzenberg (in Glibert, 1952)
—
Strausz 1966
: 463
, pl. 68, figs 6–7.
?
Conus
(
Chelyconus
)
cfr.
ponderosus
Brocchi—Strausz 1966: 463
, pl. 69, fig. 11, pl. 70, fig. 1.
Conus
(
Chelyconus
)
pseudoponderosus
Glibert 1952
—Bohn-Havas 1973: 1122, pl. 7, fig. 4, pl. 9, fig. 12.
Conus
(
Chelyconus
)
conoponderosus
Sacco—Kókay 1996: 457
, pl. 4, fig. 1 [non
Lautoconus conoponderosus
(Sacco, 1893)
].
Varioconus conoponderosus
(Sacco, 1893)
—
Kovács & Vicián 2013
: 83
, fig 111–115 [non
Lautoconus conoponderosus
(Sacco, 1893)
].
Conus pseudoponderosus
Glibert, 1952
—
Vaessen 2010
: 12
, figs 10C, 15–18 [cum syn.].
Type
material.
Holotype
: Royal Belgian Institute of Natural Sciences, Nr. 10591, Cat.
Types
Invert. tert.
I.R.Sc.
N.B. nr. 2816, Manthelan,
France
;
middle Miocene, Langhian; illustrated in
Glibert (1952a, pl. 13, fig. 4)
;
paratypes
: Royal Belgian Institute of Natural Sciences, Nr. 10591, Cat.
Types
Invert. tert.
I.R.Sc.
N.B. nr. 2817, Bossée, Manthelan,
France
; middle Miocene, Langhian.
Revised description.
Moderately large to large, solid shells with broad conical to weakly cyrtoconoid spire and broad conical last whorl. Spire whorls weakly convex with deep suture, not striate. Subsutural flexure asymmetrically curved, rather shallow. Last whorl with broadly rounded shoulder, rarely slightly angulate. Siphonal fasciole broad, weakly swollen; siphonal canal short, wide, straight. Colour pattern consisting of about 15 spirals of widely-spaced subquadratic and rectangular dots (see Bohn-Havas 1973, pl. 9, fig. 12).
Discussion.
This species was described by
Glibert (1952a)
from the Langhian of the Loire Basin. Later
Strausz (1966)
and Bohn-Havas (1973) identified this species also in the coeval deposits of the Paratethys. The broad conical outline, rounded shoulder and slightly convex spire whorls allow a clear separation from
Lautoconus ponderosus
. Therefore, we consider it a distinct species as proposed also by
Vaessen (2010)
. The internal cast illustrated by
Strausz (1966, pl. 69, fig. 11, pl. 70, fig. 1)
might also represent this species. In our opinion, the Paratethyan records of
Lautoconus conoponderosus
(Sacco, 1893)
also represent
L. pseudoponderosus
(e.g.
Kovács & Vicián 2013
, fig. 113, which is a hardly distinguishable from the holotype of
L. pseudoponderosus
). Despite the similarity in shape,
L. conoponderosus
as defined by
Davoli (1972)
is smaller and more slender.
Paleoenvironment.
Shallow marine environments (e.g. Letkés,
Kovács & Vicián 2013
).
Distribution in Paratethys.
Badenian (middle Miocene):
Pannonian Basin:
Várpalota, Bánd, Diósd, Letkés, Szob,
Budapest
: Illés street, Kerepesi street (
Hungary
).
Proto-Mediterranean Sea and
northeastern Atlantic.
Langhian:
Loire
Basin (
Glibert 1952a
); Tortonian: Cacela Velha, Cacela Basin (
Portugal
) (
Glibert 1952a
).