Carnivora from the early Oligocene of the ‘ Phosphorites du Quercy’ in southwestern France
Author
Bonis, Louis de
Palevoprim: laboratoire de Paléontologie, Évolution, Paléoécosystèmes, Paléoprimatologie, Bâtiment B 35 TSA 51106, 6 rue Michel Brunet F- 86073 Poitiers cedex 9 (France)
louis.debonis@univ-poitiers.fr
Author
Gardin, Axelle
Palevoprim: laboratoire de Paléontologie, Évolution, Paléoécosystèmes, Paléoprimatologie, Bâtiment B 35 TSA 51106, 6 rue Michel Brunet F- 86073 Poitiers cedex 9 (France)
axelle.gardin@univ-poitiers.fr
Author
Blondel, Cécile
Palevoprim: laboratoire de Paléontologie, Évolution, Paléoécosystèmes, Paléoprimatologie, Bâtiment B 35 TSA 51106, 6 rue Michel Brunet F- 86073 Poitiers cedex 9 (France)
cecile.blondel@univ-poitiers.fr
text
Geodiversitas
2019
2019-09-10
41
15
601
621
journal article
10.5252/geodiversitas2019v41a15
1e89d723-7f54-4d6b-85dd-6bcd573eca32
1638-9395
3694209
urn:lsid:zoobank.org:pub:9DD3CC29-3AEA-44B8-8E8F-6AD882DF5B1C
Cephalogale
sp.
(
Fig. 3F
)
NEW
MATERIAL
. —
Piece of hemi-mandible,
UP
MGB
26, with p3, alveoli of c, p1, p2 and p4.
DESCRIPTION
AND
COMPARISON
The mandible (
Fig. 3F
1
, F
2
) belongs to a medium sized carnivoran. The corpus height under p3 is
19.7 mm
and the thickness
4.25 mm
. There are two mental foramina, one under the roots of p2, another under the distal root of p3. The
size of the tooth (L = 8.45, w = 4.25) is within the range of
Cyonarctos dessei
Bonis, 2013
, with length =
7.6 to 11.1 mm
and width 3.15 to 5.71 (
Bonis 2013
: table 1) but the shape is different. The profile of the crown is slightly asymmetrical, the distal part being larger than the mesial one. The buccal face is convex but the lingual one is separated into two parts by a vertical median pillar, with both parts being slightly concave. A weak cingulid runs along the lingual base and, to in a lesser extent, the buccal one, to distally enclose a small and very shallow talonid basin.
The morphology of
MGB
26 is far from that of the shearing premolars of the nimravids. It is the same, judging from the shape of P4, with the small amphicyonid
Goupilictis
Ginsburg, 1969. Thus,
MGB
26 fits the
Cephalogalini
better.
Adelpharctos
Bonis, 1971
is larger. The p3 is missing in the
holotype
of the nominal species, but the shape and size of p4, large, high, and nearly symmetrical, may give an idea of the p3 morphology. However, the tooth is present in
A. ginsburgi
Bonis, 2011
and confirms the deduction.
Phoberogale
Ginsburg & Morales, 1995
displays a very low and elongate p3 with a more robust cingulid and a clear pacd.
Cyonarctos
Bonis, 2013
differs by the higher and more pointed p3 without cingulid and talonid basin. The closest genus seems to be
Cephalogale
with the closest species being
C. brevirostris
(Croizet
in
Blainville, 1845) (
Blainville 1845
: 122) and
C. gergoviensis
Viret, 1929
. Thus we cannot provide a specific attribution, and then the fossil is identified as
Cephalogale
sp.