Reconstruction of Oligocene and Neogene freshwater fish faunas-an actualistic study on cypriniform otoliths
Author
Schulz-Mirbach, Tanja
Author
Reichenbacher, Bettina
text
Acta Palaeontologica Polonica
2006
51
2
283
304
journal article
10.5281/zenodo.13643922
1732-2421
13643922
Palaeotinca moeddeni
sp. nov.
Fig. 27
.
Fig. 27.
Palaeotinca moeddeni
sp. nov.
from early Oligocene of Wolfsheim (Germany).
A–K
. Utricular otoliths (lapilli).
C
,
E–G
,
J
,
K
. BSPG 2003 XVIII 53, 55–57, 60, and 61 respectively, in dorsal views, represented as right lapilli (all mirrored, except for J).
A
,
B
,
D
,
H
,
I
. BSPG 2003 XVIII 51 (holotype), 52, 54, 58, 59 respectively, in ventral views, represented as left lapilli (A, D, I mirrored).
L
. Pharyngeal tooth BSPG 2003 XVIII 62. SEM−pictures.
2000 “genus Cyprinidarum” sp. A;
Mödden et al. 2000
, pro parte: 349, figs. 5A, B.
Holotype
:
BSPG 2003
XVIII 51 (right lapillus),
Fig. 27A
.
Derivation of the name
: This species is dedicated to Dr. Clemens Mödden (Eltville,
Germany
). He greatly supported the field studies in the Mainz Basin.
Type locality
: Wolfsheim,
20 km
southwest of Mainz in the Mainz Basin (see
Mödden et al. 2000
: fig. 1; here
Fig. 2A
).
Material
.—90 lapilli, SMF PO 64053–54, BSPG 2003 XVIII 51–62.
Dimensions and stratigraphic range
.—See
Tables 1
and
4
, and
Fig. 32
.
Diagnosis.—
Lapilli with a distinct concavity of the posterior margin, a strongly curving medial margin, and a thickened middle portion.
Description
.—The general shape is rounded with a pointed posterior end. The strongly developed anteromedial and anterolateral edges, the distinctly pronounced mineralization area, and the distinct cranial umbo of the fossil lapilli resemble the Recent
Tinca tinca
(
Fig. 20
).
Remarks
.—The single pharyngeal tooth (
Fig. 27L
, length:
3 mm
, width 1.59 mm) that was found in the locality Wolfsheim could be determined as cf.
Palaeotinca
(Madelaine Böhme, personal communication 2005). Presently, there are two Oligocene
Palaeotinca
species
that both were found in sediments of late Oligocene age:
P. macrura
(
Agassiz, 1843
)
from some localities in
Germany
(
Gaudant 1988
, as
Tarsichthys macrurus
) and
Palaeotinca
sp.
from the Lower Freshwater Molasse in
Switzerland
and Haute−Savoie (
Gaudant et al. 2002
, as
Tarsichthys
sp.
). The pharyngeal tooth of our new species displays a mastication area that runs more or less oblique from the terminal hook to the proximal area. In contrast,
P. macrura
shows a more curving mastication area and also a more prominent incision beneath the terminal hook (see
Gaudant et al. 2002
: fig. 2).
P. moeddeni
sp. nov.
is presently the oldest worldwide record of a
Palaeotinca
species.