Review of the Early Cretaceous erymid lobsters (Crustacea: Decapoda) from the Western Tethys
Author
Devillez, Julien
Muséum national d’Histoire naturelle, Paris Centre de Recherche sur la Paléobiodiversité et les Paléoenvironnements (CR 2 P, UMR 7207), Sorbonne Universités, MNHN, UPMC, CNRS, 57 rue Cuvier F- 75231 Paris cedex 05 (France)
julien.devillez@edu.mnhn.fr
Author
Charbonnier, Sylvain
Muséum national d’Histoire naturelle, Paris Centre de Recherche sur la Paléobiodiversité et les Paléoenvironnements (CR 2 P, UMR 7207), Sorbonne Universités, MNHN, UPMC, CNRS, 57 rue Cuvier F- 75231 Paris cedex 05 (France)
sylvain.charbonnier@mnhn.fr
Author
Hyžný, Matúš
Department of Geology and Palaeontology, Faculty of Natural Sciences, Comenius University, Mlynská dolina G 1, 842 15 Bratislava (Slovakia); Geologisch-paläontologische Abteilung, Naturhistorisches Museum Wien, Burgring 7, 1010 Vienna (Austria)
hyzny.matus@gmail.com
Author
Leroy, Lucien
Hameau de Taloire, F- 04120 Castellane (France)
lucien.leroy@orange.fr
text
Geodiversitas
2016
2016-12-30
38
4
515
541
http://dx.doi.org/10.5252/g2016n4a4
journal article
10.5252/g2016n4a4
1638-9395
5208463
urn:lsid:zoobank.org:pub:CFFB0AA0-D396-40EB-BE75-D2E417257B87
Pustulina colossea
n. sp.
(
Fig. 9G, H
)
TYPE MATERIAL. —
Holotype
MNHN
.F.
A57459
(
Leroy
coll.).
TYPE
LOCALITY. —
Castellane
,
Alpes-de-Haute-Provence
department,
Provence-Alpes-Côte d’Azur region
, southeastern
France
.
TYPE
AGE. — Hauterivian, Early Cretaceous.
ETYMOLOGY. — The specific epithet refers to the massive size and appearance of the carapace for a representative of
Pustulina
.
DESCRIPTION
Subcylindrical carapace (
holotype
: CL =
c.
50 mm
with incomplete branchial region,
CH
=
29 mm
); rostrum not preserved; cephalic region with dorsal line strongly inclined downward; strongly inflated cardiac, hepatic and branchial regions; wide, deep cervical groove, subvertical, slightly sinuous at level of gastro-orbital groove, narrowing above its junction to hepatic groove, joined to dorsal margin and to antennal groove; narrow, shallow antennal groove, strongly curved towards anterior margin; wide, deep gastro-orbital groove, originating as a median inflexion of cervical groove, with two divergent branches delimiting two inflated gastro-orbital lobes; wide postcervical groove, strongly inclined in dorsal branchial region and arcuate before joining hepatic groove, forming a notch in upper hepatic region; deep, concave hepatic groove, joined to cervical groove; inferior groove joined to hepatic groove; shallow, straight cardiac groove, rising from postcervical groove, slightly inclined forward, joined to dorsal margin; carapace entirely covered with rounded tubercles, coarser and more widely spaced forward postcervical groove, thinner and closer in branchial and pterygostomial regions; row of coarse tubercles parallel to intercalated plate; cephalic region with convex antennal row of tubercles and distal antennal spine.
DISCUSSION
Pustulina colossea
n. sp.
is assigned to
Pustulina
based on its typical carapace groove pattern: long gastro-orbital groove with two branches, postcervical groove joined to hepatic groove, concave hepatic groove and cardiac groove.
Pustulina colossea
n. sp.
differs from
Pustulina tuberculata
and
Pustulina spinulata
by the cephalic region with dorsal margin strongly inclined downward (straight in the latter), its postcervical groove curved in dorsal branchial region (straight in the latter), its prominent upper gastro-orbital lobe (flat in the latter), and its heterogeneous ornamentation (homogeneous in the latter). The differences between
P. colossea
n. sp.
and
Pustulina occitana
n. sp.
are described in the discussion about
P. occitana
n. sp.
Among
Pustulina
species
,
P. colossea
n. sp.
is the only one showing a curved postcervical groove and a raised upper gastro-orbital lobe. Furthermore, some morphological characters of
P. colossea
n. sp.
, in particular the width of cervical and gastro-orbital grooves and the massive appearance of the carapace, are also encountered in
Enoploclytia
.