A new species of Plicopurpura (Mollusca: Rapaninae) from the Lower Miocene Cantaure Formation of Venezuela

2010·4.2 MB·English

B. Landau &G. Vermeij NOVAPEX 1 1(4): 99-106, 10 décembre 2010
A new species oiPlicopurpura (Mollusca: Rapaninae) from the Lower
Miocène Cantaure Formation ofVenezuela
LANDAU
Bernard
Centre de Geologia da Universidade de Lisboa, Campo Grande,
1749-016 Lisboa, Portugal
and International Health Centres, Av. Infante de Henrique 7, Areias Sào Joào,
P-8200 Albufeira, Portugal
[email protected]
Geerat VERMEIJ
Department ofGeology, University ofCalifomia at Davis, One Shields Avenue,
CA USA
Davis, 95616,
[email protected]
KEYWORDS. Rapaninae, Mollusca, Plicopiirpura, Miocène, Cantaure Formation, Venezuela,
new species.
ABSTRACT. A new species ofPlicopiirpura (Mollusca, Gastropoda, Muricidae, Rapaninae) is
described from the Lower Miocène Cantaure Formation ofthe Paraguanâ Peninsula, Venezuela.
This is the earliest record ofthe genus, which is represented in the Récent fauna by closely related
species on either side ofthe Isthmus of Panama. This ancestral form still retains some characters
common to most Rapaninae and has not yet developed the strongly inflated, auriculiform last
whorl typical of the genus today. Purpura weisbordi Gibson-Smith & Gibson-Smith, 1979 is
considered ajuniorsubjective synonym ofPlicopiirpurapatiila (Linnaeus, 1758).
INTRODUCTION Zones of Bolli (1966) and Zones N7-N8 of Blow
(1969). Rey (1996) contlrmed this âge based on the
Jung (1965) provided a systematic description of the nannofossil assemblage, and placing it in the
fossil moUuscan assemblage of the Cantaure Helicosphaera ampliaperta and Sphenolithus
shellbeds, on the Paraguanâ Peninsula, Venezuela, heteromorphus Zones, NN4-NN5.
including 95 gastropod species. A slow but steady The fullest understanding of the assemblage of fossil
trickle of later papers has dealt with undescribed taxa molluscs found in Cantaure is important from a
not covered in the initial monograph (Gibson-Smith taxonomic point of view; there is a high level of
1974, 1979; Gibson-Smith & Gibson-Smith 1982, endemism (Jung 1965; Landau et al. 2008) and there
1983, 1985; Vokes 1992, 1995; Landau 1996; Landau is an important component of hard-bottom-dwelling
& Petit 1996; Gibson-Smith et al. 1997; Vermeij & gastropods (Veimeij 2001; Landau et al. 2009), which
Vokes 1997; Vermeij 2001, 2006; Landau et al. 2007; is very unusual in the Caribbean Neogene
Vermeij et al. 2009; Beu 2010). Although thèse works assemblages. It is also important from a
hâve added another 51 gastropod species to the paleobiogeographical standpoint, being
assemblage (see Appendix 1), there are probably chronologically the oldest Neogene deposit situated in
about another 100 species still undescribed or the southernmost part of the Gatunian
unrecorded in the Cantaure fauna. In this and palaeobiogeographic province (Vermeij & Petuch
subséquent papers we hope to make the full extent of 1986; Vermeij 2005; Landauet al. 2008).
the gastropod assemblage ofCantaure known.
The Cantaure Formation (Hunter 1978; Gibson-Smith Material and Methods
& Gibson-Smith 1979), with a thickness ofabout 75m
(Jung 1965), is exposed in a séries of arroyos about The material described hère is from the Gibson-Smith
500 m south ofan abandoned house known as "Casa collection housed in the Naturhistorisches Muséum
Cantaure", which is 14km west of Pueblo Nuevo in Basel (NHMB coll.), Switzerland and the Bernard
the Paraguanâ Peninsula ofVenezuela. The base ofthe Landau collection (BL coll.), now deposited in the
unit is a Balanus bed containing blocks of granité, Naturhistorisches Muséum Wien (NHMW coll.),
passing upwards through sands and calcareous sands Vienna.
(Hunter & Bartok 1974). Diaz de Gamero (1974), Most of the Caribbean Neogene literature
based on planktic forams, assigned a Lower Miocène distinguishes a Lower (Early), Middle and Upper
âge to the Cantaure Formation, placing it in the (Late) Pliocène, in this séries of papers on the
Globigerinatella insueta and Praeorbulina glomerosa Cantaure assemblage we hâve adopted the récent
99
B. Landau&G. Vermeij A new specics o\'Plivopiirpiirci IVom ihc Lower Miocène
recommcndation of ihc International C'oininission on superficial. initially straight, later undulaling.
Stratigraphy acceptée! by the lUGS on Jiine 30, 2009 Sculpture on first whorl eroded. Second whorl
- on the redéfinition ofthe Pleistocene (now including abraded, two nodulous spiral cords présent, adapical
the (îelasian Stage Age as its lowermost unit), and the cord al shoulder, delimiting broad, gently sioping
concomitant torniai redéfinition ol" the base of the suturai ramp; abapical cord at the suture; third
Quatemary System/Period (and thiis the nodulose spiral cord appearing on suturai ramp close
Neogene'0'-''^t^''''iary boiindary) by the Monte San to adapical suture on second half of penultimate
Nicola CiSSP and thiis to be coincident wilh the bases whorl; secondary spiral thread developing between
oflhe Pleistocene and Gelasian. each pair of primary nodulous cords. Last whorl
globose, PI-P5 broad, elevated, nodulose; SP
S^ STEMATIC PALAEONTOLOGY narrower, weakly nodulous. Four secondary spiral
cords ofequal strength overly primary cords; si to s5
The description adopls the tcrminology siiggested by présent with one tertiary spiral thread in interspaces on
Merle (1W9. 2001), m which the foUowing either side. Entire surface covered with close-set
abbre\iations are iised: growth lamellae, giving somewhat scabrous
appearance. Aperture wide, ovate, outer lip bevelled,
P: Primar\ cord crenulated in conformity with primary spiral cords;
s: secondarv cord denticulate within, denticlesjust within lip margin, but
SP: Siibsiitiiral cord not extending to it, extending into aperture as
PI Shouldercord interrupted lirae; ID small, Dl strongest, D2-D5 of
:
P2-P6: Primary cords ofthe convex part ofthe roughly equal strength; anal notch marked by very
teleoconch whorl narrow adapical groove; siphonal canal narrow, open,
sl-s6: secondary cords ofthe convex part ofthe slightly abaxially curved. Inner lip almost straight,
teleoconch whorl weakly concave in pariétal area; columellar and
exatnple: si = secondarycordbetween PI and P2; s2 = pariétal area on venter forming a wide concavity;
secondary cord between P2 and P3, etc. columellar callus thin, ciosely adpressed. Siphonal
fasciole relatively prominent, rounded; positions of
APERTURE previous canals marked as coarse scabrous lamellae.
ID; Infrasutural denticle Discussion. The description given above is based on
Dl to D6: Abapical denticles both the holotype and the paratype. Vermeij &
Carison (2000, p. 25) noted that an undescribed
SUPERFAMILY MURICOIDEA Rafinesque, 1815 species of Plicopurpura was présent in the Cantaure
FAMILY MURICIDAE Rafinesque, 1815 assemblage, represented by a single spécimen in the
Subfamily RAPANINAE Gray, 1853 Gibson-Smith collection in Basel, somewhat eroded
Genus Plicopurpura Cossmann, 1903 and missing its spire (holotype, Figs 1-3). A second
spécimen was found by us (BL, 2005) with an
Plicopurpuraprimitiva n. sp. incomplète aperture, but with well preserved surface
Figs 1-6 sculpture and spire eroded, but présent. Attempts to
find further spécimens during subséquent visits hâve
Type material and dimensions. Holotype NHMB been unsuccessful.
coll. NMB H18370, height 22.3 mm (Figs 1-3); In the Récent fauna, ciosely similar species occur on
NHMW mm
paratype 2009z0075/0002, height, 21.4 either side of the Isthmus of Panama, Plicopurpura
(Figs4-6). patula (Linnaeus, 1758) in the Caribbean Province
and Plicopurpura columellaris (Gould, 1853) and P.
Type locality. Cantaure Formation (early Miocène: pansa (Lamarck, 1816) in the Eastem Pacific
Biirdigalian), lower shell bed, 1 km southwest ofCasa Province. The Pacific forms hâve lower expansion
Cantaure. about 10 km west ofPueblo Nuevo, Falcôn, rates than the Caribbean ones, giving the shell a less
Venezuela (=locality GS12PGNA ofGibson-Smith & auriculiform shape, the tubercles on the spiral cords
Gibson-Smith. 1979). are finer and there are denticles often présent within
the aperture. Keen (1971) recognised both species in
Diagnosis. A Plicopurpura species, with a small, solid the tropical eastem Pacific, P. columellaris and P.
shell, the last whorl has a relatively low expansion pansa, and suggested they could easily be separated
rate, thickened outer lip, denticulate within and by the size of their shells and the colour of their
sculpture offive broad elevated cords bearing rounded apertures. Wellington & Kuris (1983) considered
nodules. thèse two taxa to be conspecific. Kool (1993)
discussed the présence of two Plicopurpura species,
Description. Shell small for genus, ovate, solid, with one on either side ofthe Isthmus ofPanama, which he
short spire, rapidly expanding whorls. Protoconch not considered distinct taxa as the two no longer
preserved. Teleoconch of about 3.5 whorls. Suture interbreed in nature. Arias-Rodriguez et al. (2007)
100
B. Landau &G. Vermeu NOVAPEX 1 1(4): 99-106, 10 décembre 2010
again separated the two tropical eastem Pacific species exception, which hâve a similarly globose last whorl
on the basis of chromosome analysis. Dominguez- and narrower aperture as seen in the fossil species.
Ojeda et al. (2009), based on laboratory observations The spiral sculpture consists of fewer primary spiral
on the reproduction and development of the two cords, five as opposed to seven to eight in the living
species, noted there were changes in their morphology taxa, and the cords are elevated bearing prominent
at différent reproductive stages in their embryonic and nodules as opposed to the relatively subdued cords
larval development and in the process ofrégénération bearing sharp nodules in the Récent shells. In some of
of their copulative organ. They again suggested the the shells of the Récent Pacific columellaris-
two tropical eastem Pacific "species" might be morphotype the nodules are obsolète on the last whorl,
subspecies or moiphological variation due to but the number ofcords is always greater than in the
environmental conditions. Based on shell fossil species. The inner lip is farmore thickened in P.
characteristics présent in the large Récent Tropical primitiva than in the living Caribbean P. patula, which
American Pacific collections available to us (GJV), tend to hâve a relatively thin outer lip for rapanines,
both of the eastern Pacific morphotypes are présent and most spécimens of P. patula do not hâve such
with intergrading forms, suggesting a single species. prominent denticles developed within the lip as seen
Regardless of their degree of divergence, the Récent in the fossil species. The Récent Pacific forms of
Plicopurpitra shells on either side of the Isthmus of ro/i/we//(7r/5-morphotype also hâve a relatively thicker
Panama are extremely similar, sharing the same lip with denticles within as in P. primitiva, and some
inflated auriculiform last whorl, large aperture and hâve indistinct folds on the ventral part of the
seven or eight indistinct spiral cords bearing pointed columellar surface, absent in the pansa-mor^hoiype,
nodules. P. patula and the new fossil form. Unfortunately we
Plicopiirpiiraprimitiva n. sp. is clearly différent from hâve insufficient spécimens ofP. primitiva to hâve an
P. patula and P. columellaris in having a much idea ofthe intraspecific variability. The fossil species
smaller shell, the expansion rate of the adult from Cantaure seems to be a Plicopurpura in the
teleoconch whorl is far less, resulting in a globose last making, retaining many of the features common to
whorl, rather than an auriculiform one as in the two other Rapaninae; a globular shape, solid shell,
Récent species. As a conséquence of the lesser prominent spiral cords bearing nodules and a
expansion rate of the last whorl in the fossil species thickened, bevelled, outer lip bearing denticles within.
the aperture is relatively narrower. The Récent Pacific There is a sparse record for Plicopurpura in the fossil
forms ofthe cohtmeUans-movç)\\oXype also hâve a less literature. Weisbord (1962) recorded P. patula from
expanded last whorl than the Caribbean P. patula, and the Lower Pleistocene upper Mare Formation of
juvénile P. patula and some of the adult southem Venezuela (Bermùdez & Fuenmayor, 1962; Gibson-
&
Caribbean forms also hâve a less auriculiform last Smith Gibson-Smith, 1979; Macsotay, 2005b).
whorl (GJV Personal observation), however, in most Thèse same spécimens were later described as a new
ofthèse Récent forms the last whorl is more expanded taxon Purpura weisbordi by Gibson-Smith & Gibson-
than in P. primitiva. Some shells ofthe columellaris- Smith (1979) on the basis ofthe shape ofthe inner lip
morphotype are the exception, which hâve a similarly when viewed across the edge of the outer lip.
globose last whorl and narrower aperture as seen in Interestingly, one of the Holocene spécimens from
the fossil species. The spiral sculpture consists of Amuay Bay, Paraguanâ Peninsula of Venezuela (BL
fewerprimary spiral cords, five as opposed to seven to coll.) has the same excavation to the central part ofthe
eight in the living taxa, and the cords are elevated, columella seen in the shell illustrated by Weisbord
bearing prominent nodules, as opposed to the (1962, pi. 26, figs 15-16) resulting in a concave
relatively subdued cords bearing sharp nodules in the portion with a very sharp edge, slightly more rounded
Récent shells. In some of the shells of the Récent than the angular excavation seen in Wesibord's shell.
Pacific columellaris-morphoXy^Q the nodules are Apart from this curious feature the shells described as
obsolète on the last whorl, but the number ofcords is Purpura weisbordi are indentical to P. patula. In our
always greater than in the fossil species. The inner lip opinion this is more likely to be a pathological
is far more thickened in P. primitiva than in the living deformity or post mortem changes than a
Caribbean P. patula, which tend to hâve a relatively morphological feature. For example, shells occupied
thin outer lip for rapanines, and most spécimens ofP. by the terrestrial hennit crab genus Coenobita, hâve
patula do not hâve such prominent denticles part ofthe columella missing (Bail, 1972, Kinosita &
developed within the lip as seen in the fossil species. Okijama, 1968; Vermeij, 1987). We therefore consider
The Récent Pacific forms of the columellaris- Purpura weisbordi by Gibson-Smith & Gibson-Smith,
morphotype also hâve a less expanded last whorl than 1979 a junior subjective synonym of P. patula.
the Caribbean P. patula, and juvénile P. patula and Aguilar & Fischer (1986) listed P. pansa for the
some ofthe adult southern Caribbean forms also hâve Upper Pleistocene Montezuma Formation of Pacific
a less auriculiform last whorl (GJV personal Costa Rica (Baumgartner et al., 1984). We (BL) hâve
observation), however, in most ofthèse Récent forms spécimens of P. patula from the Upper Pleistocene
the last whorl is more expanded than in P. primitiva. and Holocene ofVenezuela, but as faras we are aware
Some shells of the fo////;?e//<:/r/5-morphotype are the this is the first pre-Pleistocene record forthe genus.
101
B. Lamml &G. Vermkij A iicu spccics ol'Plic()/)iu/>iirci tVoin ihc I.ower Miocciic
Tliere is no inrormalion on wlicrc ihe lioU)l\pc was undescribed Tegiila, Stninioniia, Thais, NeorapcDia,
found in the Cantaure beds. However, the paralypc Microrhytis, Ocinebrina, Hesperislernia, Macron, and
was found in the "iower bed" of Gibson-Smith & a large undeseribed limpet; see Vermeij et al. 2009;
Gibson-Smith 1^7^). a bed ofcoarser sand lying on a Personal observation BL). This assemblage of hard-
(
BaUiniis bed containing blocks of granité (Hiinter & bottom-dwelling gastropods found in the "Iower bed"
Bartok 1974). Most ofthe rapanine gastropods présent in Cantaure is extremely important as it is unparalleled
in the Cantaure assemblage are found in this louer in the rest ofthe tropical American Neogene and gives
unit (see Vermeij 2001; personal observation BL). a glimpse into the taxa that inhabited thèse
This is to be expected, as PUcopiirpiira is an intertidal environments in the southern Gatunian Province at the
genus assoeiated \\ilii rocky shores and in the beginning ofNeogene time.
Cantaure assemblage several other taxa assoeiated
with hard bottoms are found more commonly or Etymology.The name reflects this being the earliest
almost exelusixely in the "Iower bed" (Ncrila, known P/icopiirpura species.
FIGURE CAPTIONS
Figs 1-6 - Plicopurpura primitiva n. sp., Cantaure Formation (early Miocène: Burdigalian), Iower shell bed.
Casa Cantaure, Paraguana Peninsula, Falcôn, Venezuela; 1-3, holotype NMB H18370, height 22.3 mm; 4-6 -
NHMW
paratype 2009z0075/0002, height 21.4 mm; 6, détail ofsurface sculpture oflast whorl.
102
B. Landau &G. Vermeu NOVAPEX 1 1(4): 99-106, 10 décembre 2010
ACKNOWLEDGEMENTS Gibson-Smith .J 1973. The genus Voliita (MoUusca:
Gastropoda) in Venezuela, with description oftwo
Dedicated to the memory ofPhi! Maxwell. We would new species. Geos 20: 65-73.
like to thank Walter Etter and Olivier Schmidt ofthe Gibson-Smith J. 1974. On two new members ofthe
Naturhistorisches Muséum Basel (NMB), Switzerland,
family Ovulidae (Mollusca, Gastropoda) from the
for access to the Gibson-Smith collection and the loan Cantaure Formation, Venezuela. Asociacion
oftype spécimens firom the Naturhistorisches Muséum Venezolanade Geologia, Minera y Petroleo,
Basel collection. Dr. Alan G. Beu, GNS Science, Boletin Informativo 17 87-94.
Lower Hutt, New Zealand reviewed the MS and made Gibson-Smith J., Gibson-Sm:ith W. 1974. The genus
many useful suggestions for improvement. Strombina (Mollusca: Gastropoda) in Venezuela,
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de Venezuela. Mérida, Venezuela, Julio 06-08- Muricopsinae. TulaneStudies in Geologyand
2005: 1-23. Paleontology26: 49-160.
Merle D. 1999.Laradiationdes Muricidae Vokes E.H. 1995. Two new Cenozoic Muricinae
(Gastropoda : Neogastropoda) auPaléogène: (Gastropoda: Muricidae) ofthe western Atlantic
approchephylogénétique etévolutive. Paris, région. TulaneStudies in Geologyand
unpublished thesis. Muséum national d'Histoire Paleontology2'i: 119-122.
naturelle: vi + 499 p. VokesE.H. 1998. Neogene paleontology in the
Merle D. 2001. The spiral cords and the internai northem Dominican Republic. 18. The superfamily
denticles ofthe outer lip in the Muricidae: Volutacea (in part) (Mollusca: Gastropoda).
terminology and methodological comments. Bulletins ofAmerican Paleontology 1 13(354): 5-
Novapex2: 69-71. 54.
Rey O.T. 1996. Estratigrafia de la Peninsula de Wellington G.M., Kuris A.M. 1983. Growth and shell
Paraguanâ, Venezuela. Revistade laFacultad variation in the tropical eastem Pacitlc intertidal
Ingenieriade Venezuela 1 I: 35-45. genusPurpura: ecological and evolutionary
implications. TheBiologicalBulletin 164: 518-535
104
1
B. Landau&G. Vermei NOVAPEX 1 1(4): 99-106, 10 décembre 2010
Appendix 1
Gastropod taxa described or recorded and figured for the Cantaure Formation of Venezuela since Jung (1965)
given in chronological order ofpublication, with pagination and figure information when the figured spécimens
are from the Cantaure assemblage.
Taxon and author Record other than Page Figure
original description
Chicorem (Siratiis) denegatus (Jung, 1966) fig. in Jung, 1965 77 pi. 70, figs 1-2
n.n. pro Murex triangularis Jung, 1965 non Brown,
1818
Voluta cantauraïKi Gibson-Smith, 1973 68 pi. 3, figs 1-3
Mitrella cantaiirana (Gibson-Smith & Gibson-Smith, 58 pi. 2, fig. 8, pi. 3,
1974) fig. 8, pi. 4, figs 8-
(originally described asStrombina; see Jung, 1989) 10
Simula winifredaeGibson Smith, 1974 88 pi. Lfigs 1-2
Jetmeria veneziielana Gibson-Smith, 1974 92 pi. Lfigs 8, 10, 11,
12
Vasiim tiiherciilatiiiu Gabb, 1873 E. Vokes, 1979, 1998 112 pl. 2, fig. 3
Harpa myrmia Olsson 193 Gibson-Smith & 57 figs 1-3
Gibson-Smith, 1982a
&
Tralia veneziielana Gibson-Smith Gibson-Smith, 119 figs 7-9
1982b
Melongena veneziielana Gibson-Smith &. Gibson- 720 figs 1-5, 13
Smith, 1983
Torqiiiferbarbascoana Gibson-Smith & Gibson-Smith, 727 figs 8-9
'
1983
Pedipes mirandiis Gibson-Smith & Gibson-Smith, 88 fig.l
1985
Endoliiimsiibfasciatum Sacco, 1890 Gibson-Smith & 119 fig. 1
Gibson-Smith, 1989
Chicorem cornurectus (Guppy, 1876) E. Vokes, 1989 31 no fig.
Chicoreiis conigendiim E. Vokes, 1989 34 no fig.
Sincola (Dorsina)pigea (Olsson, 1964)? Jung, 1989 251 no fig.
Poirieria (Panaiintrex) improceriis E.Vokes, 1992 46 pl. 9, figs 5-6
Poirieria (Panamurex) gibsonsmithi E.Vokes, 1992 48 pl. 10, tlgs5-6
Muricopsis (Risomiirex) crassicosta (Benoist, 1873) E. Vokes, 1994 72 no fig.
Chicoreiis winifredae E.Vokes, 1995 119 pl. Lfig. 1
Moriim (Oniscidia)jimgi Landau, 1996 53 pl. Lfigs 1-2
Cancellariahodsonae Landau & Petit, 1997 fig. in Jung, 1965 145 pl. 75, figs 7-8
Cancellaria (Bivetiella)jiingi Landau & Petit, 1997 fig. in Jung, 1965 146 pl. 75, figs 1-2
Cancellaria (Charcolleria) emilyvokesae Landau & 147 pl. Lfig. 1
Petit, 1997
Cancellaria (Massvla) cantaurana Landau & Petit, 147 pl. l,fig.2
1997
Axellela vara Landau & Petit, 1997 148 pl. l,fig.3
Narona barysloma (Woodring, 1970) Landau & Petit, 1997 148 pl. Lfig. 4
Macron constrictus G-S & G-S & Vermeij, 1997 358 figs 1-3
Neorapana rotiindata G-S & G-S & Vermeij, 1997 360 figs 4-9
Ocinebrinafrancesae Vermeij & E. Vokes, 1997 78 pl. 2, figs 1-5
&
Pterorvtis (Microrhvtis) christopheri Vermeij E. 101 pl. 12, figs 1-3
Vokes, 1997
Thais breviciila Vermeij, 2001 697 figs L1-L4
Stramonita bifida Vermeij, 2001 700 figs 1.5-1.7
Stramonitasemiplicata Vermeij, 2001 701 figs 1.26-1.28
Hesperisterniadistans Vermeij, 2006
Cancellaria (Bivetiella) liigogoiizalezoriini Landau, 33 figs 17-19
Petit & Silva, 2007
Cancellaria (Bivetopsia) herberti Landau, Petit & 35 tlgs 23-25
105
B. LWOAL «S:G. VLRMhlJ A ncw spccios o^PUcopiirpiiici Wom ihc lA)\vcr Miocène
Silva, 2007
Neiiia rni^iilosa Vcmieij. Frey & Landau, 2009 63 figsl-3
Nerim (Theliostyla) piiucigraiu>su Vcrmeij, Frcy & 66 figs 4-6
Landau, 2009
Biirsa rlioJosfoma (G. B. Sowerbv II, 1X35) Beu, 2010 57 pl.5. figs 10. 12
Bursa rii^iosii (G. B. Sowerby 11, IS35) Beu. 2010 59 pl. 6. fig. 7
Dislorsio hiangulata Ben. 201 80 pi. 22. figs 4, 7; pl.
51. figs 4, 5
Distorsiojimgi Beu, 2010 90 pl. 16, figs 1-11
Dislorsio mciiinfvi Emerson & PiitYer, 1953 Beu, 2010 92 no fig.
MonopU'.xccnadiciis (Mann. 1917) Beu. 2010 148 no fig.
Monopk'xjackwinoniDi Ben, 2010 155 pl. 37. figs 6-9
Monople.xrittcri Schmelz, 1989 Beu. 2010 172 pl. 43. figs 2-4
Tiirriiritoii c/oniiiii^cnsis (Gabb 1(S73) Beu. 2010 193 no fig.
Cvprcicccissis caiilaiiraïui Beu, 2010 225 pl. 63. figs 3-7; pl.
64. figs4. 9
Cvprciecassis tcsticiiliis (Linnaeus, 1758) Beu. 2010 228 no fig.
Echinophorialiac/ni (Woodring & Olsson 1957) Beu. 2010 243 no fig.
Semicassis aldrichi (Dali 1890) Beu, 2010 246 pl. 68. figs 6, 8
106