Click the links to browse through the WoRMS marine species taxonomy.
Animalia
  Mollusca
    Polyplacophora
    Gastropoda
      Prosobranchia
      Heterobranchia
      Cocculiniformia
      Neritimorpha
      Vetigastropoda
      Apogastropoda
      Caenogastropoda
        Neogastropoda
          Muricoidea
            Muricidae
              Rapaninae
                Rapana
                Stramonita
                Thais
                Pinaxia
                Nassa
                Purpura
                    Purpura persica
                    Purpura panama
                    Purpura ochrostoma
                    Purpura chrysostoma
                    Purpura venosa
                    Purpura baileyana
                    Purpura flindersi
                    Purpura striatum
                    Purpura rupestris
                    Purpura scobina
                    Purpura rugosa
                    Purpura albomarginata
                    Purpura bicolor
                    Purpura tristis
                    Purpura littorinoides
                    Purpura propinqua
                    Purpura cornigera
                    Purpura ocellata
                    Purpura tritoniformis
                    Purpura loca
                    Purpura pileopsis
                    Purpura angulifera
                    Purpura callosa
                    Purpura scalaris
                    Purpura aegrota
                    Purpura monstruosa
                    Purpura laurentiana
                    Purpura lobata
                    Purpura alveolata
                    Purpura subturrita
                    Purpura baccata
                    Purpura elata
                    Purpura spathulifera
                    Purpura alba
                    Purpura smithi
                    Purpura bollonsi
                    Purpura neglecta
                    Purpura humilis
                    Purpura aculeata
                    Purpura affinis
                    Purpura alabaster
                    Purpura alata
                    Purpura alata
                    Purpura albescens
                    Purpura albocincta
                    Purpura amygdala
                    Purpura analoga
                    Purpura anaxares
                    Purpura albofasciata
                    Purpura albolabris
                    Purpura aperta
                    Purpura armigera
                    Purpura ascensionis
                    Purpura aterrima
                    Purpura attenuata
                    Purpura aurantiaca
                    Purpura barcinonensis
                    Purpura bicarinata
                    Purpura biconica
                    Purpura bimaculata
                    Purpura biserialis
                    Purpura blainvillei
                    Purpura brevidens
                    Purpura bronni
                    Purpura brunneus
                    Purpura buccinea
                    Purpura buccinoidea
                    Purpura lapillus
                    Purpura bufonides
                    Purpura callaoensis
                    Purpura callifera
                    Purpura callosa
                    Purpura canaliculata
                    Purpura cancellata
                    Purpura cancellata
                    Purpura cancellata
                    Purpura capensis
                    Purpura lefevrei
                    Purpura leucostoma
                    Purpura lineata
                    Purpura lineata
                    Purpura lineolata
                    Purpura lineolata
                    Purpura lischkei
                    Purpura macrostoma
                    Purpura macrostoma
                    Purpura (Cuma)
                    Purpura (Ricinula)
                      Purpura (Ricinula) iodostoma
                      Purpura (Ricinula) martiniana
                    Purpura (Stramonita)
                    Purpura carinata
                    Purpura carinifera
                    Purpura carolensis
                    Purpura cassidiformis
                    Purpura castanea
                    Purpura centriquadata
                    Purpura chaidea
                    Purpura chocolata
                    Purpura chusani
                    Purpura cingulata
                    Purpura cingulifera
                    Purpura clathrata
                    Purpura clavigera
                    Purpura columellaris
                    Purpura congener
                    Purpura cornucervi
                    Purpura coronata
                    Purpura crassa
                    Purpura cribrosa
                    Purpura cuspidata
                    Purpura decemcostata
                    Purpura delessertiana
                    Purpura diadema
                    Purpura distinguenda
                    Purpura dubia
                    Purpura dumasi
                    Purpura duplex
                    Purpura echinata
                    Purpura edwardsii
                    Purpura echinulata
                    Purpura emarginata
                    Purpura engonata
                    Purpura eudeli
                    Purpura fasciata
                    Purpura fasciata
                    Purpura floridana
                    Purpura foliacea
                    Purpura forbesii
                    Purpura fragum
                    Purpura francolinus
                    Purpura freycinetii
                    Purpura fuscata
                    Purpura fusiformis
                    Purpura gemmulata
                    Purpura gigantea
                    Purpura gigantea
                    Purpura granulata
                    Purpura grateloupiana
                    Purpura grayi
                    Purpura guineensis
                    Purpura harpa
                    Purpura helena
                    Purpura heyseana
                    Purpura imbricata
                    Purpura imperialis
                    Purpura incarnata
                    Purpura inerma
                    Purpura infumata
                    Purpura intermedia
                    Purpura javanica
                    Purpura kiosquiformis
                    Purpura laevis
                    Purpura lapilloides
                    Purpura mancinelloides
                    Purpura marginatra
                    Purpura marmorata
                    Purpura martinetana
                    Purpura melones
                    Purpura deltoidea
                    Purpura multilineata
                    Purpura minor
                    Purpura muricata
                    Purpura muricina
                    Purpura muricoides
                    Purpura muricoides
                    Purpura musiva
                    Purpura nassoides
                    Purpura nebulosa
                    Purpura nodulifera
                    Purpura nodulosa
                    Purpura novaehollandiae
                    Purpura nuttalli
                    Purpura oceanica
                    Purpura ostrina
                    Purpura ovalis
                    Purpura pansa
                    Purpura patens
                    Purpura peruviana
                    Purpura planospira
                    Purpura pothuani
                    Purpura jatou
                    Purpura problematica
                    Purpura pseudamygdala
                    Purpura quoyi
                    Purpura rudis
                    Purpura rudolphi
                    Purpura suppressus
                    Purpura turbinoides
                    Purpura squamigera
                    Purpura haematura
                    Purpura unifascialis
                    Purpura haemastoma
                    Purpura viduata
                    Purpura striata
                    Purpura flammea
                    Purpura neritoides
                    Purpura speciosa
                    Purpura triangularis
                    Purpura triserialis
                    Purpura luteomarginata
                    Purpura bitubercularis
                    Purpura undata
                    Purpura kienerii
                    Purpura subdeltoidea
                    Purpura major
                    Purpura tumulosa
                    Purpura truncata
                    Purpura pura
                    Purpura trinitatensis
                    Purpura trigona
                    Purpura scalaris
                    Purpura umbilicata
                    Purpura tissoti
                    Purpura variabilis
                    Purpura tosana
                    Purpura succincta
                    Purpura textilosa
                    Purpura clathrata
                    Purpura saxicola
                    Purpura septentrionalis
                    Purpura squamosa
                    Purpura wahlbergi
                    Purpura zeyheri
                    Purpura spirata
                    Purpura senegalla
                    Purpura spiralis
                    Purpura sirat
                    Purpura virgineus
                    Purpura scabra
                    Purpura variegata
                    Purpura tuberosa
                    Purpura fenestrata
                    Purpura marginalba
                    Purpura nodosa
                    Purpura sphaeridia
                    Purpura squamosa
                    Purpura squamulosa
                    Purpura stellaris
                    Purpura violacea
                    Purpura scabra
                Vexilla
                Drupa
                Sistrum
                Ricinula
                Acanthais
                Agnewia
                Concholepas
                Conchulus
                Conchopatella
                Cymia
                Dicathais
                Canrena
                Pentadactylus
                Neothais
                Phycothais
                Plicopurpura
                Microtoma
                Purpurella
                Patellipurpura
                Conothais
                Reishia
                Semiricinula
                Taurasia
                Menathais
                Tribulus
                Planithais
                Provexillum
                Simplicotaurasia
                Cuma
                Ricinella
                Mancinella
                Cumopsis
              Ocenebrinae
              Typhinae
              Haustrinae
              Muricopsinae
              Trophoninae
              Ergalataxinae
              Tripterotyphinae
              Coralliophilinae
            Coralliophilidae
            Cystiscidae
            Marginellidae
            Mitridae
            Turbinellidae
            Volutidae
            Volutomitridae
            Costellariidae
            Harpidae
            Pleioptygmatidae
            Columbariidae
            Babyloniidae
            Strepsiduridae
          Cancellarioidea
          Conoidea
          Buccinoidea
          Volutoidea
          Olivoidea
          Pseudolivoidea
        Sorbeoconcha
        [unassigned] Caenogastropoda
        Littorinimorpha
        Stenoglossa
        Hypsogastropoda
      Patellogastropoda
    Scaphopoda
    Bivalvia
    Monoplacophora
    Solenogastres
    Cephalopoda
    Placophora
    Aculifera
    Conchifera
    Pelecypoda
    Caudofoveata
    Lamellibranchiata
    Conchifera
  Porifera
  Platyhelminthes
  Nematoda
  Annelida
  Nemertina
  Arthropoda
  Ctenophora
  Cnidaria
  Sipuncula
  Echiura
  Pogonophora
  Entoprocta
  Tardigrada
  Phoronida
  Brachiopoda
  Echinodermata
  Hemichordata
  Chordata
  Gastrotricha
  Chaetognatha
  Ectoprocta
  Mesozoa
  Rotifera
  Gnathostomulida
  Acanthocephala
  Cycliophora
  Cephalorhyncha
  Placozoa
  Bryozoa
  Myxozoa
  Sipunculida
  Pentastomida
  Nemertini
Plantae
Fungi
Protozoa
Bacteria
Chromista
Archaea
Viruses
Monera