Content uploaded by Allysson P. Pinheiro
Author content
All content in this area was uploaded by Allysson P. Pinheiro on Aug 14, 2020
Content may be subject to copyright.
Content uploaded by William Santana
Author content
All content in this area was uploaded by William Santana on Aug 13, 2020
Content may be subject to copyright.
1
(page number not for citation purpose)
RESEARCH ARTICLE
New Antarctic clawed lobster species (Crustacea: Decapoda:
Nephropidae) from the Upper Cretaceous of James Ross Island
Allysson P. Pinheiro,1,2 Antônio Álamo Feitosa Saraiva,2,3 William Santana,1,2 Juliana Manso Sayão,4
Rodrigo Giesta Figueiredo,5 Taissa Rodrigues,6 Luiz Carlos Weinschütz,7 Luiza Corral Martins de
Oliveira Ponciano8 & Alexander Wilhelm Armin Kellner9
1Laboratório de Crustáceos do Semiárido, Universidade Regional do Cariri, Crato, CE, Brazil;
2Laboratory of Systematic Zoology, Pró-Reitoria de Pesquisa e Pós-Graduação, Universidade do Sagrado Coração, Bauru, SP, Brazil;
3Laboratório de Paleontologia, Universidade Regional do Cariri, Crato, CE, Brazil;
4Laboratório de Paleobiologia e Paleogeografia Antártica, Museu Nacional/Universidade Federal do Rio de Janeiro, RJ, Brazil;
5Departamento de Biologia, Universidade Federal do Espírito Santo, Alegre, ES, Brazil;
6Laboratório de Paleontologia, Departamento de Ciências Biológicas, Centro de Ciências Humanas e Naturais, Universidade Federal do Espírito Santo,
Vitória, ES, Brazil;
7Centro Paleontológico da Universidade do Contestado, Universidade do Contestado, Mafra, SC, Brazil;
8Laboratório de Tafonomia e Paleoecologia Aplicadas, Departamento de Ciências Naturais, Universidade Federal do Estado do Rio de Janeiro, Brazil;
9Laboratory of Systematics and Taphonomy of Fossil Vertebrates, Departamento de Geologia e Paleontologia, Museu Nacional/Universidade Federal do
Rio de Janeiro, Rio de Janeiro, RJ, Brazil
Introduction
Antarctica plays a very important role in understanding
faunal groups with Gondwanan origin (Crame 1989;
Clarke et al. 2004). However, on the account of the con-
tinent’s inhospitable conditions, its remoteness and the
high cost of operations, Antarctica’s fossil record is gener-
ally scarce compared to deposits in other continents (e.g.,
Kellner 1996; Feldmann & Schweitzer 2017; Kellner etal.
2019; Zhang et al. 2019). The James Ross Basin, in the
Antarctic Peninsula, has one of the best- preserved and
highly diverse fossil assemblages of the continent (Feld-
mann 1990; Feldmann et al. 1993). In the stratigraphic
context of this basin, the Santa Marta Formation (San-
tonian–Campanian) has abundant records of decapods,
especially nephropids (Feldmann & Tshudy 1989; Feld-
mann et al. 1993). Among the Nephropidae, the genus
Hoploparia McCoy, 1849 is the best-known fossil group,
with 67 species described worldwide, ranging from the
Lower Cretaceous (Valanginian) to the Miocene (Tshudy
& Sorhannus 2003; Schweitzer et al. 2010). Although
well represented in the fossil record, the genus is consid-
ered to be a “wastebasket taxon”, difcult to characterize
(Tshudy & Sorhannus 2003). Despite the high diversity
of the genus, Hoploparia stokesi (Weller, 1913), from the
Lower Cretaceous to the Paleocene, and H. gazdzickii
Abstract
A new species of nephropid lobster, Hoploparia echinata sp. nov., from the
James Ross Island in the Antarctic Peninsula is here described and illus-
trated. The material was collected in the Santa Marta Formation (Santonian–
Campanian), the basal unit of the Marambio Group, Larsen Basin, located in
the western portion of the Antarctic Peninsula. Hoploparia echinata sp. nov.
can easily be differentiated from its congeners by the presence of distinct
short spines on dorsal and ventral margins on the third maxillipeds, merus of
the chelipeds and pereopods; these are the characters not described in other
Hoploparia species so far.
Keywords
Astacidea; Hoploparia; Metanephrops;
Nephropoidea; Marambio Group
Correspondence
William Santana, Laboratory of Systematic
Zoology, Pró-Reitoria de Pesquisa e Pós-
Graduação, Universidade do Sagrado
Coração, Rua Irmã Arminda, 10-50, Jd. Brasil,
17011-160, Bauru, SP, Brazil.
E-mail: willsantana@gmail.com
Abbreviations
PALEOANTAR: Paleobiology and Paleogeography of South Gondwana: Interrelationships between Antarctica and South America (research project);
PROANTAR: Programa Antártico Brasileiro (Brazilian Antarctic Programme); USNM: National Museum of Natural History, Smithsonian Institution,
Washington D.C.; MN: Museu Nacional (Rio de Janeiro); MN-I: Palaeoinvertebrate collection, Museu Nacional (Rio de Janeiro); P1: cheliped (the claw-bearing
pair of legs in decapod crustaceans); P2–P5: pereopods 2–5 (pairs of the walking limbs of a crustacean); UFRJ: Federal University of Rio de Janeiro
Zoobank publication registry
LSID urn:lsid:zoobank.org:pub:216FFB2A-DC53-4225-976B-60C65EB46BEB
Polar Research 2020. © 2020 Allysson P. Pinheiro et al. This is an Open Access article distributed under the terms of the Creative Commons Attribution- NonCommercial
4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), permitting all non-commercial use, distribution, and reproduction in any medium,
provided the original work is properly cited. Citation: Polar Research 2020, 39, 3727, http://dx.doi.org/10.33265/polar.v39.3727
Citation: Polar Research 2020, 39, 3727, http://dx.doi.org/10.33265/polar.v39.3727
2
(page number not for citation purpose)
New clawed lobster species from the Cretaceous of Antarctica A.P. Pinheiro et al.
Feldmann & Crame, 1998 from the Early Miocene are
the only known species in the Antarctic region, with sev-
eral specimens collected on Seymour, Vega, King George,
Mumps and Cockburn islands (Ball 1960; Feldmann &
Tshudy 1987; Feldmann & Crame 1998; El-Shazly 2015).
PALEOANTAR eldwork at Santa Marta Cove, James
Ross Island, during the Antarctic summer of 2015/16
(supported by PROANTAR) revealed a great number
of fossil specimens, including decapods. Two specimens
collected in the horizons of the Santa Marta Formation
exhibit some characteristics previously unknown in other
Hoploparia species, and a new taxon, H. echinata sp. nov.,
is proposed.
Geological settings
The Marambio Group, Larsen Basin, is located in the
western portion of the Antarctic Peninsula, on James
Ross Island (Fig. 1). The Larsen Basin, according to
Macdonald et al. (1988), is divided into two sub-basins:
South and James Ross. The James Ross Sub-basin orig-
inated during the breakdown of Gondwana with the
deposition of a Meso-Cenozoic sedimentary sequence
in a retroarc basin (Hathway 2000). It is considered one
of the thickest and most complete volcano-sedimentary
sequences deposited in the Cretaceous–Paleogene of the
Southern Hemisphere (Crame et al. 1996) and is divided
Fig. 1 Map of fossil location and occurrence (a) Location of the Antarctic Peninsula indicating the James Ross Island. (b) Detail of the James Ross and Vega
islands; red square indicates the area where fieldwork was carried out. (c) Geological map of the prospected area, showing where fossils were found.
Citation: Polar Research 2020, 39, 3727, http://dx.doi.org/10.33265/polar.v39.3727 3
(page number not for citation purpose)
A.P. Pinheiro et al. New clawed lobster species from the Cretaceous of Antarctica
lithostratigraphically into the Nodenskjöld Formation
and the Gustav and Marambio groups (Hathway 2000;
Hathway & Riding 2001; Riding & Crame 2002).
The Marambio Group crops out in portions of the James
Ross, Vega, Humps, Snow Hill, Seymour and Cockburn
islands. These deposits represent a progradant system
composed of a variety of sandstones, siltstones and mud-
stones and coquina levels, which were deposited under
storm conditions at the internal to external platform
(Crame et al. 1991; Crame et al. 2004). The Marambio
Group is divided into the Santa Marta, Snow Hill Island,
Lopez de Bertodano and Sobral formations (Fig. 2).
The Santa Marta Formation (Santonian–Campanian)
is the basal unit of the Marambio Group. It is over 900m
thick and consists of a sequence of intercalated sand-
stones, siltstones and volcanic tuffs (Olivero 2012), inter-
preted as a sequence of volcanoclastic deposits formed in
a deltaic environment (Scasso et al. 1991; Olivero 2012).
In the north-western portion of James Ross Island, the
Santa Marta Formation is divided into the Lachman Crags
and the Herbert Sound members (Crame et al. 1991).
The basal Lachman Crags Member (late Coniacian
to late Campanian) has a thickness of approximately
850m and consists of rare conglomerate clays, siltstones
and sandstones that were deposited in a shallow marine
environment (Crame et al. 1991; Carvalho et al. 2013).
The upper Herbert Sound Member (late Campanian to
the early Maastrichtian [Crame et al. 1991]) is 250 m
thick and consists of ne sandstone with cross-stratica-
tion and coquina levels (Crame et al. 1991; Olivero et al.
1986; Crame et al. 1999; Olivero & Medina 2000).
The fossil specimens studied here were collected in
layers that correspond to the upper portion of the Lach-
man Crags Member, which is the sole stratigraphic unit in
the immediate area where the specimens were collected.
They were found in concretions that were scattered on
the surface and lack any feature indicating signicant
transportation. Such preservation is rather common in
fossils found at James Ross Island (e.g., Kellner et al.
2011).
Material and methods
The descriptive terminology mostly follows that used by
Holthuis (1974) and Tshudy & Sorhannus (2003). Descrip-
tions, drawings and photographs were made using a
Nikon SMZ 745T stereomicroscope equipped with a cam-
era lucida and a Leica EZ4 W, both with digital cameras
attached. The paratype was coated with Paraloid B-72 and
ultraviolet lights were used to photograph the holotype.
Information provided for the comparative material has
been retrieved from the labels of the material examined
at the USNM, which may be divergent from what is pre-
sented in the original descriptions of H. stokesi (Weller,
1903) and Metanephrops jenkinsi Feldmann, 1989. For a
list of all the examined material, see Table 1.
Systematic palaeontology
Order Decapoda Latreille, 1802
Infraorder Astacidea Latreille, 1802
Remarks: The Astacidea are easily distinguished from
the other lobsters by the presence of a generally large,
true chelae (i.e., with the dactylus opposed to an exten-
sion of the propodus on most of its length) on the rst
pair of pereopods, this being the largest and most robust
pair (Holthuis 1991). Although not fully preserved in the
new species, the rst pereopod is the largest and more
robust, with the merus and carpus fully preserved and
the palm partially preserved proximally (Fig. 3). The palm
Fig. 2 Stratigraphic chart of James Ross Sub-basin (modified from Olivero
et al. 1986 and Marenssi et al. 2001).
Citation: Polar Research 2020, 39, 3727, http://dx.doi.org/10.33265/polar.v39.3727
4
(page number not for citation purpose)
New clawed lobster species from the Cretaceous of Antarctica A.P. Pinheiro et al.
is elongated, slightly inated and with distinct tubercles
sparsely distributed in all surfaces, common characteris-
tics of several Astacidea, including Hoploparia. We there-
fore consider the new species an Astacidea.
Family Nephropidae Dana, 1852
Remarks: According to Holthuis (1974: 732), “The pat-
tern of the grooves of the carapace is very striking” with
several grooves recognized in some or all Nephropidae.
The carapace grooves in the new species (i.e., cervical,
postcervical, branchiocardiac and inferior; Fig. 3) seem to
be a reasonable ground for the inclusion in this family.
Genus Hoploparia McCoy, 1849
Remarks: The material is considered to be a Hoploparia
species on the basis of the carapace with small tubercles
mostly in the posterior half, and the presence of the cer-
vical, postcervical, branchiocardiac and inferior grooves
and the absence of carinae common in other groups, such
as Metanephrops Jenkins, 1972, in which most species
have the carapace with supraorbital and postorbital cari-
nae. Also, some of the characters used by Tshudy (1993)
to dene Hoploparia are presence of a long and spinose
rostrum; with a postcervical groove well impressed over
most of its length; a cervical groove and a branchiocar-
diac groove usually present. As compared with Hoploparia
longimana Sowerby, 1826, the type species of the genus,
both species share a carapace posteriorly granulated
and an elongated cheliped, and a palm armed with few
tubercles. However, the new species has the pleural and
tergal regions of the pleon separated with a marked sul-
cus (smooth in H. longimana). Also, Hoploparia is mostly
known from shallow marine Cretaceous deposits (Tshudy
& Sorhannus 2000), which is the case of Lachman Crags
Member, where the material studied here was collected.
Hoploparia echinata sp. nov.
Zoobank act: LSID urn:lsid:zoobank.org:act:643B193A-
3B0F-437D-B447-808FDD6EB8C7
Figures 3a–e, 4, 5
Etymology. From the Latin echinatus, which means spiny,
referring to the spinulose characteristic of the legs and
third maxillipeds.
Type material. The holotype and the paratype are depos-
ited in the MN, under catalogue numbers MN 10435-I
and 10436-I, respectively. The material was not lost in
the re of the MN/UFRJ in 2018 (Kellner 2019).
Type locality. Santa Marta Cove, James Ross Island,
Antarctica.
Stratigraphic unit. Santa Marta Formation.
Type age. Upper Cretaceous (Santonian–Campanian).
Diagnosis. Carapace with small tubercles sparsely dis-
tributed, mostly on the posterior half; postcervical,
intercervical, cervical grooves visible; without branchial,
intermediate carina on posterior half of carapace. Third
maxillipeds, cheliped and pereopods 2 and 3 ornamented
with distinct, short spines on dorsal and ventral margins.
Description. Carapace poorly preserved, represented
by an imprint on the matrix, with small tubercles
sparselydistributed, mostly on the posterior half; cervical,
Table 1 List of comparative material observed in the present study.
Species
catalogue no.
Sampling site
(Antarctica)a
GeologybAgecType
material
Hoploparia stokesi (Weller, 1903)
USNM 410841 SI LBF, Unit 7 LCr Non-type
USNM 410855 SI LBF, Unit 7 LCr Non-type
USNM 458905 SI LBF, Unit 9 LCr Paratype
USNM 458907 SI LBF, Unit 9 LCr Paratype
USNM 410891 SI LBF, Unit 9 LCr Non-type
USNM 458910 SI LBF, Unit 9 LCr Paratype
USNM 458911 SI LBF, Unit 9 LCr Paratype
USNM 458915 SI LBF, Unit 8 LCr Paratype
USNM 458917 SI LBF, Unit 9 LCr Paratype
USNM 458919 SI LBF, Unit 9 LCr Paratype
USNM 410842 SI LBF, Unit 7 LCr Paratype
USNM 410844 SI LBF, Unit 7 LCr Paratype
USNM 410846 SI LBF, Unit 7 LCr Paratype
USNM 410847 SI LBF, Unit 7 LCr Paratype
USNM 410848 SI LBF, Unit 7 LCr Paratype
USNM 410849 SI LBF, Unit 7 LCr Paratype
USNM 410850 SI LBF, Unit 7 LCr Paratype
USNM 410853 SI LBF, Unit 7 LCr Paratype
USNM 410859 SI LBF, Unit 7 LCr Paratype
USNM 410883 SI LBF, Unit 7 LCr Paratype
USNM 430025 SI LBF, Unit 7–9 LCr, LCa Non-type
USNM 458920 VIFIP LBF LCr Non-type
USNM 458904 VIFIP LBF LCr Non-type
USNM 458912 MI LBF, CLM LCr Non-type
USNM 458914 CI LBF, CLM LCr Paratype
Metanephrops jenkinsi Feldmann, 1989
USNM 424602 SI LBF, Unit 10 LCr Paratype
USNM 424609 SI LBF, Unit 10 Pa Paratype
USNM 424614 SI SF, Unit 3 Pa Paratype
USNM 424600 SI LBF, Unit 10 Pa Paratype
USNM 424605 SI LBF, Unit 10 Pa Paratype
aSeymour Island is abbreviated to SI; Vega Island, False Island Point to
VIFIP; Mumps Island to MI; Cockburn Island to CI. bLopez de Bertodano
Formation is abbreviated to LBF; Cape Lamb Member to CLM; Sobral
Formation to SF. cLate Cretaceous is abbreviated to LCr; Late Campanian
to LCa; Paleocene to Pa.
Citation: Polar Research 2020, 39, 3727, http://dx.doi.org/10.33265/polar.v39.3727 5
(page number not for citation purpose)
A.P. Pinheiro et al. New clawed lobster species from the Cretaceous of Antarctica
Fig. 3 (a) Holotype (MN 10435-I) of H. echinata sp. nov. in lateral view under ultraviolet light, specimen dry, uncoated. The red arrow indicates the position
of the carapace; the yellow arrow indicates the position of the endophragmal skeleton. (b) Holotype in lateral view with inverted colours. (c) Line drawing of
the holotype: carapace, pereopods, pleon, telson and uropods detached. (d) Paratype (MN 10436-I) third maxilliped and rostrum, specimen dry, coated with
Paraloid B-72. (e) Line drawing of the third maxilliped and rostrum of the paratype. Abbreviations: Car, carapace; ce, cervical groove; pc, postcerv ical groove;
bc, branchiocardiac groove; i, inferior groove; R, rostrum; Che, cheliped; P2–P5, pereopods 2–5; 3mxpd, third maxilliped; 1pl to 6pl, first to sixth pleonite;
U, uropod; T, telson.
Citation: Polar Research 2020, 39, 3727, http://dx.doi.org/10.33265/polar.v39.3727
6
(page number not for citation purpose)
New clawed lobster species from the Cretaceous of Antarctica A.P. Pinheiro et al.
Fig. 4 Detailed view of the merus of the cheliped of H. echinata sp. nov. holotype (MN 10435-I). The red arrows show the ventral and a dorsal spine. The
yellow arrow shows a line of three ventrolateral tubercles.
Fig. 5 Reconstruction of H. echinata sp. nov. in its palaeoenvironment. Illustration by Maurilio Oliveira (palaeoartist, MN/UFRJ).
Citation: Polar Research 2020, 39, 3727, http://dx.doi.org/10.33265/polar.v39.3727 7
(page number not for citation purpose)
A.P. Pinheiro et al. New clawed lobster species from the Cretaceous of Antarctica
postcervical, branchiocardiac and inferior grooves visible,
without branchial, intermediate carina on posterior half
of carapace. Margins of the posterior half of the cara-
pace indiscernible from the matrix. Cephalic appendages
not preserved. Rostrum fragment (paratype) possi-
ble long and at least laterally attened distally, slightly
upward and tapering distally, with, at least, four distinct
spines dorsally, smooth ventrally; rostral spines forward
directed. Third maxilliped distinctly preserved in para-
type, slightly compressed laterally, with ischium, merus
and carpus complete, propodus partially preserved, coxa
and basis not preserved; ischium with two blunt tuber-
cles ventrally; merus with four-ve short, strong spines
on ventral margin, one dorsally; carpus smooth. A frag-
ment with two segments in holotype is possibly part of
the third maxilliped. First and second maxillipeds not
preserved. Cheliped preserved; merus and carpus fully
preserved, laterally compressed; palm partially preserved
proximally, slightly inated. Merus with two spines and
three strong, blunt tubercles ventrally, one dorsal acute,
short spine; merus with additional row of blunt tubercles
ventrolaterally; carpus smooth; palm partially preserved
with distinct tubercles, sparsely distributed in all surfaces.
Pereopods laterally compressed. P2 with merus and car-
pus preserved, propodus partially preserved; merus with
line of ve, well-spaced, acute, short spines on ven-
tral margin, dorsal margin with three small projections
grouped distally. P3 merus preserved, other articles not
preserved, merus with only one acute tubercle on ventral
margin medially. P4 with only merus preserved, appar-
ently smooth. P5 with ischium partially preserved, appar-
ently smooth; merus and carpus fully preserved, smooth;
propodus partially preserved, smooth. Pleon with six ple-
onites, all preserved; pleural and tergal regions separated
with visible sulcus on second to fth pleonites; pleonites
without spines or tubercles. First pleonite reduced, sec-
ond slightly longer, third to fth pleonites of about same
size. Second and third pleonites with one posterolateral
strong spine; fourth with two distinct spines on lateral
margin; fth pleonite with one blunt tubercle anteriorly,
one strong spine posteriorly on lateral margin; sixth pleo-
nite smooth, short. Telson and uropods apparently with-
out ornamentation, uropods only partially preserved.
Discussion
The holotype material of H. echinata sp. nov. consists of a
carapace disconnected from pleon and pereopods, with
the endophragmal skeleton visible under ultraviolet light.
The position of the carapace displaced from the pereon
and pleon suggests this could be an exuvia by the typi-
cal “lobster open moult” position (Daley & Drage 2016).
The paratype is represented by the third maxilliped, some
pereopod fragments and a fragment putatively identied
as the distal part of the rostrum. The new species can eas-
ily be differentiated from other Hoploparia by the orna-
mentation of the third maxilliped, merus of the cheliped
and pereopods with distinct, acute, short spines on dor-
sal and ventral margins (in contrast to other Hoploparia,
which have smooth third maxillipeds and pereopods,
chelipeds ornamented only in the palm and ngers).
Despite the great amount of Hoploparia material known,
there is no mention of spines or ornamentation in maxil-
lipeds and pereopods in any other species of the genus. In
fact, from the more than 60 known species of Hoploparia,
only two original descriptions mention the third maxilli-
peds: Hoploparia catalunica Garassino, Artal & Pasini, 2009
and Hoploparia miyamotoi Karasawa, 1998, both without
ornamentation. Also, Quayle (1987), in the designation
of a neotype to Hoploparia gammaroides McCoy, 1849, pro-
vided a detailed description and gure of its third max-
illiped ornamented with nely punctuation and spaced
pores, but no spines.
Compared with its congeners in the austral region,
H. echinata sp. nov. differs from Hoploparia antarctica
Wilckens, 1907 by the gastroorbital, antennal, buccal,
urogastric and branchiocardiac grooves apparently absent,
which are present in the carapace of H. antarctica (Agu-
irre-Urreta et al. 1991). Hoploparia gazdzickii Feldmann &
Crame, 1998 can be differentiated from the new species
by the presence of a straight antennal groove, two rows
of spines on the cephalic region and an antennal spine, all
absent in H. echinata sp. nov. The new species seems to be
morphologically more closely related to H.stokesi (Weller,
1903), from which it can be distinguished by the presence
of distinct, acute tubercles and spines on the dorsal and
ventral pereopod margins.
Hoploparia is a very speciose genus, especially in Europe,
where more than 50 species are known (El-Shazly 2015).
For Antarctica, H. echinata sp. nov. is the fourth species
described. It is unknown whether the paucity of Hoplo-
paria species found so far in Antarctica is a function of the
challenges of carrying out research there or if it reected
the small number of species that lived in this region. In
any case, the great morphological variation among species
included in the genus Hoploparia makes it a challenge to
characterize. This genus forms a paraphyletic group, con-
sidered a “wastebasket taxon”, default receptacle for taxa
excluded from other higher groupings for several authors
(e.g., Tshudy & Sorhannus 2003; Tshudy et al. 2018). Like-
wise, we observe that there is a high degree of morpho-
logical variation in the specimens attributed to H.stokesi,
indicating that a revision of the species and of the genus is
needed. This would not be an easy task given the number
of species in the genus and amount of material from dif-
ferent parts of the world attributed to Hoploparia.
Citation: Polar Research 2020, 39, 3727, http://dx.doi.org/10.33265/polar.v39.3727
8
(page number not for citation purpose)
New clawed lobster species from the Cretaceous of Antarctica A.P. Pinheiro et al.
Acknowledgements
The team of the PALEOANTAR project wants to thank the
NApOc Ary Rongel military group for the logistical sup-
port that allowed us to arrive on James Ross Island, Ant-
arctica. The pilots of the HU-1 helicopter squadron safely
delivered our personnel, scientic and camping equipment
from the ship to the island and back again, in addition to
taking the collected samples. The alpinists Edson Vandeira,
Ricardo Leizer and Renato Dias ensured the team’s phys-
ical integrity during excursions on James Ross Island, as
well as keeping the camp running during the expedition.
We thank the TERRANTAR—Permafrost, Cryosoils and
Terrestrial Ecosystems and Climatic Change Studies in
Antarctica project team (Carlos Schaeffer, Maiara Daher,
Eduardo Senra, Carsten Müller and Lars-Arne Meier) for
their partnership in the shared camp and for their collabo-
ration during the eld activities.
Funding
This study was supported by PROANTAR (CNPq no.
407670/2013-442677/2018-9 to AWAK), Conselho
Nacional de Desenvolvimento Cientíco e Tecnológico
(CNPq no. 420687/2016-5-313461/2018-0 to AWAK;
no. 312360/2018-5 to TR; no. 311715/2017-6 to JMS),
Fundação Carlos Chagas Filho de Amparo a Pesquisa do
Estado do Rio de Janeiro (FAPERJ no. E-26/202.905/2018
to AWAK) and Coordenação de Aperfeiçoamento de Pes-
soal de Nível Superior, Brasil, nance code 001 (fellowship
no. 88887.169169/2018-00 to WS and grant Proequipa-
mentos no. 775705/2012 to APP).
Disclosure statement
The authors report no potential conict of interest.
References
Aguirre-Urreta M.B., Olivero E.B. & Medina F.A. 1991.
A redescription of a Maastrichtian lobster Hoploparia
antarctica Wilckens, 1907 (Crustacea: Decapoda), from
Chubut, Argentina. Journal of Paleontology 65, 795–800,
doi: 10.1017/S0022336000037781.
Ball H.W. 1960. Upper Cretaceous Decapoda and Serpulidae from
James Ross Island, Graham Land. Falkland Islands Dependencies
Survey Report 24. London: Her Majesty’s Stationery Ofce.
Carvalho M.A., Ramos R.R.C., Crud M.B., Witovisk L., Kell-
ner A.W.A., Silva H.P., Grillo O.N., Riff D. & Romano P.S.R.
2013. Palynofacies as indicators of paleoenvironmental
changes in a Cretaceous succession from the Larsen Basin,
James Ross Island, Antarctica. Sedimentary Geology 295,
53–66, doi: 10.1016/j.sedgeo.2013.08.002.
Clarke A., Aronson R.B., Crame J.A., Gili J.M. & Blake D.B.
2004. Evolution and diversity of the benthic fauna of the
Southern Ocean continental shelf. Antarctic Science 16,
559–568, doi: 10.1017/S0954102004002329.
Crame J.A. 1989. Origins and evolution of the Antarctic
biota: an introduction. Geological Society, London, Special Pub-
lications 47, 1–8, doi: 10.1144/GSL.SP.1989.047.01.01.
Crame J.A., Francis J.E., Cantrill D.J. & Pirrie D. 2004. Maas-
trichtian stratigraphy of Antarctica. Cretaceous Research 25,
411–423, doi: 10.1016/j.cretres.2004.02.002.
Crame J.A., Lomas S.A., Pirrie D. & Luther A. 1996. Late Cre-
taceous extinction patterns in Antarctica. Journal of the Geo-
logical Society 153, 503–506, doi: 10.1144/gsjgs.153.4.0503.
Crame J.A., McArthur J.M., Pirrie D. & Riding J.B. 1999.
Strontium isotope correlation of the basal Maastrichtian
Stage in Antarctica to the European and US biostratigraphic
schemes. Journal of the Geological Society 156, 957–964,
doi: 10.1144/gsjgs.156.5.0957.
Crame J.A., Pirrie D., Riding J.B. & Thomson M.R.A.
1991. Campanian–Maastrichtian (Cretaceous) stratigra-
phy of the James Ross Island area, Antarctica. Journal
of the Geological Society 148, 1125–1140, doi: 10.1144/
gsjgs.148.6.1125.
Daley A.C. & Drage H.B. 2016. The fossil record of ecdy-
sis, and trends in the moulting behaviour of trilobites.
Arthropod Structure & Development 45, 71–96, doi: 10.1016/j.
asd.2015.09.004.
Dana J.D. 1852 (preprint of 1854 publication) Conspectus
Crustaceorum, &c. Conspectus of the Crustacea of the
exploring expedition under Capt. Wilkes, U.S.N. Macro-
ura. Proceedings of the Academy of Natural Sciences, Philadel-
phia 6, 6–28.
El-Shazly S.H. 2015. Cretaceous–tertiary Hoploparia spe-
cies: occurrence, paleobiogeography and predation
context. Journal of African Earth Sciences 112, 299–313,
doi: 10.1016/j.jafrearsci.2015.09.014.
Feldmann R.M. 1989. Metanephrops jenkinsi n. sp. (Decapoda:
Nephropidae) from the Cretaceous and Paleocene of Sey-
mour Island, Antarctica. Journal of Paleontology 63, 64–69,
doi: 10.1017/S0022336000040968.
Feldmann R.M. 1990. Decapod crustaceans from James Ross
Island, Antarctica. Antarctic Journal of the United States 25,
45–46.
Feldmann R.M. & Crame J. 1998. The signicance of a new
nephropid lobster from the Miocene of Antarctica. Palae-
ontology 41, 807–814.
Feldmann R.M. & Tshudy D. 1987. Ultrastructure in cuticle
from Hoploparia stokesi (Decapoda: Nephropidae) from the
Lopez de Bertodano Formation (Late Cretaceous–Paleo-
cene) of Seymour Island, Antarctica. Journal of Paleontology
61, 1194–1203, doi: 10.1017/S0022336000029565.
Feldmann R.M. & Tshudy D.M. 1989. Evolutionary pat-
terns in macrurous decapod crustaceans from Cretaceous
to early Cenozoic rocks of the James Ross Island region,
Antarctica. Geological Society, London, Special Publications 47,
183–195, doi: 10.1144/GSL.SP.1989.047.01.14.
Feldmann R.M., Tshudy D.M. & Thomson M.R.A. 1993.
Late Cretaceous and Paleocene decapod crustaceans from
Citation: Polar Research 2020, 39, 3727, http://dx.doi.org/10.33265/polar.v39.3727 9
(page number not for citation purpose)
A.P. Pinheiro et al. New clawed lobster species from the Cretaceous of Antarctica
James Ross Basin, Antarctic Peninsula. Journal of Paleontol-
ogy 67, Paleontological Society Memoir 28, 1–41, doi: 10.1017/
S0022336000062077.
Hathway B. 2000. Continental rift to back-arc basin: Juras-
sic–Cretaceous stratigraphical and structural evolution of
the Larsen Basin, Antarctic Peninsula. Journal of the Geolog-
ical Society 157, 417–432, doi: 10.1144/jgs.157.2.417.
Hathway B. & Riding J.B. 2001. Stratigraphy and age of the
lower Cretaceous Pedersen Formation, northern Antarc-
tic Peninsula. Antarctic Science 13, 67–74, doi: 10.1017/
S0954102001000104.
Holthuis L.B. 1974. The lobsters of the superfamily Nephrop-
idae of the Atlantic Ocean (Crustacea: Decapoda). Bulletin
of Marine Science 24, 723–884.
Holthuis L.B. 1991. FAO species catalog. Vol. 13. Marine lobsters
of the world. An annotated and illustrated catalogue of species of
interest to sheries known to date. Rome: Food and Agricul-
ture Organization of the United Nations.
Kellner A.W.A. 1996. Reinterpretation of a remarkably well
preserved pterosaur soft tissue from the early Cretaceous
of Brazil. Journal of Vertebrate Paleontology 16, 718–722, doi:
10.1080/02724634.1996.10011360.
Kellner A.W.A. 2019. A reconstrução do Museu Nacional:
bom para o Rio, bom para o Brasil! (The reconstruction
of the National Museum: good for Rio, good for Brazil!)
Ciência e Cultura 71(3), 4–5, doi: 10.21800/2317-6660201
9000300002.
Kellner A.W.A., Rodrigues T., Costa F.R., Weinschütz L.C.,
Figueiredo R.G., Souza G.A. & Sayão J.M. 2019. Pterodacty-
loid pterosaur bones from Cretaceous deposits of the Antarc-
tic Peninsula. Anais da Academia Brasileira de Ciências 91 (Suppl.
2), e20191300, doi: 10.1590/0001-3765201 920191300.
Kellner A.W.A., Simões T., Riff D., Grillo O., Romano P., Silva
H.P., Ramos R., Carvalho M., Sayão J.M., Oliveira G. &
Rodrigues T. 2011. The oldest plesiosaur (Reptilia, Sau-
ropterygia) from Antarctica. Polar Research 30, article no.
7265, doi: 10.3402/polar.v30i0.7265
Latreille P.A. 1802. Histoire naturelle, générale et particulière
des Crustacés et des Insectes. Ouvrage faisant suite à l’histoire
naturelle générale et particulière, composée par Leclerc de Buffon,
et rédigée par C.S. Sonnini, membre de plusieurs sociétés savantes.
Familles naturelles des genres. Vol. 3. (Natural, general and par-
ticular history of crustaceans and insects. Book following general
and particular natural history, composed by Leclerc de Buffon,
and written by C.S. Sonnini, member of several learned societies.
Natural families of genera. Vol. 3.) Paris: F. DuFart.
Macdonald J.A., Montgomery J.C. & Wells R.M.G. 1988.
Comparative physiology of Antarctic shes. In J.H.S. Blax-
ter & A.J. Southward (eds.): Advances in marine biology.
Vol.24. Pp. 321–388. London: Academic Press.
Marenssi S.A., Salani F.M. & Santillana S.N. 2001. Geología de
cabo Lamb, isla Vega, Antártida. (Geology of Cape Lamb, Vega
Island, Antarctica.) Contribuición Cientíca del Instituto Antártico
Argentino 530. Buenos Aires: Argentine Antarctic Institute.
McCoy F. 1849. XIX. On the classication of some British Fos-
sil Crustacea, with notices of new forms in the University
Collection at Cambridge. Annals and Magazine of Natural
History 4, 161–179, doi: 10.1080/03745486009494810.
Olivero E.B. 2012. Sedimentary cycles, ammonite diversity
and palaeoenvironmental changes in the Upper Creta-
ceous Marambio Group, Antarctica. Cretaceous Research 34,
348–366, doi: 10.1016/j.cretres.2011.11.015.
Olivero E.B. & Medina F.A. 2000. Patterns of Late Cretaceous
ammonite biogeography in southern high latitudes: the
family Kossmaticeratidae in Antarctica. Cretaceous Research
21, 269–279, doi: 10.1006/cres.1999.0192.
Olivero E.B., Scasso R.A. & Rinaldi C.A. 1986. Revision del
Grupo Marambio en la Isla James Ross, Antártida. (Revision of
the Marambio Group on James Ross Island, Antarctica.) Instituto
Antártico Argentino, Contribución 331. Buenos Aires: Argen-
tine Antarctic Institute.
Quayle W.J. 1987. English Eocene Crustacea (lobsters and
stomatopod). Palaeontology 30, 581–612.
Riding J.B. & Crame J.A. 2002. Aptian to Coniacian
(early–Late Cretaceous) palynostratigraphy of the Gustav
Group, James Ross Basin, Antarctica. Cretaceous Research
23, 739–760, doi: 10.1006/cres.2002.1024.
Scasso R.A., Olivero E.B. & Buatois L.A. 1991. Lithofacies,
biofacies, and ichnoassemblage evolution of a shallow
submarine volcaniclastic fan-shelf depositional system
(Upper Cretaceous, James Ross Island, Antarctica).
Journal of South American Earth Sciences 4, 239–260,
doi: 10.1016/0895-9811(91)90034-I.
Schweitzer C.E., Feldmann R.M., Garassino A., Karasawa
H. & Schweigert G. 2010. Systematic list of fossil decapod
crustacean species. Crustaceana Monographs 10. Leiden: Brill.
doi: 10.1163/ej.9789004178915.i-222.
Tshudy D. 1993. Taxonomy and evolution of the clawed lobster
families Chilenophoberidae and Nephropidae. PhD dissertation,
Kent State University.
Tshudy D., Hyžný M., Dulai A. & Jagt J.W. 2018. Appraisal
of the fossil record of Homarus (nephropid lobster),
with description of a new species from the upper Oli-
gocene of Hungary and remarks on the status of Hoplo-
paria. Journal of Paleontology 92, 170–182, doi: 10.1017/
jpa.2017.65.
Tshudy D. & Sorhannus U.L.F. 2000. Pectinate claws in deca-
pod crustaceans: convergence in four lineages. Journal
of Paleontology 74, 474–486, doi: 10.1017/S00223360000
31735.
Tshudy D. & Sorhannus U.L.F. 2003. Hoploparia, the best-
known fossil clawed lobster (Family Nephropidae), is
a “wastebasket” genus. Journal of Crustacean Biology 23,
700–711, doi: 10.1651/C-2353.
Weller S. 1903. The stokes collection of Antarctic fossils. The
Journal of Geology 11, 413–419, doi: 10.1086/621086.
Wilckens O. 1907. Die Lamellibranchiaten, Gastropoden etc.
der oberen Kreide Südpatagoniens. (The Lamellibranchian,
gastropods etc. of the upper Cretaceous in southern Patago-
nia.) Berichte der Naturforschenden Gesellschaft zu Freiburg15,
97–166.
Zhang X., Jiang S., Cheng X. & Wang X. 2019. New mate-
rial of Sinopterus (Pterosauria, Tapejaridae) from the early
Cretaceous Jehol Biota of China. Anais da Academia Brasile-
ira de Ciências 91, e20180756, doi: 10.1590/0001-3765201
920180756.
